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Buy from Amazon $23.69$0.01 $20.00 $15.00 $10.00 $5.00 Jun Aug Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr 2014 2015 2016 $22.46, Apr 14 - Jul 9$22.46, Apr 14 - Jul 9$14.76, May 3 - May 7$5.28, May 4 6:22 am$22.46, Apr 14 - Jul 9$14.76, May 3 - May 7$5.18, May 6 9:29 am$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.09, May 8 4:22 am$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.03, May 9 8:28 pm$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.41, May 11 2:37 pm$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.28, May 13 6:25 am$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.12, May 15 2:34 pm$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.00, May 17 10:06 am$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.39, May 19 4:53 am$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.31, May 21 4:40 am$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.20, May 23 12:13 am$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.06, May 24 10:20 pm$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.41, May 26 8:32 pm$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.27, May 28 7:53 pm$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.18, May 30 7:02 am$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$5.05, Jun 1 6:28 am$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$6.95, Jun 1 - Jun 3$22.46, Apr 14 - Jul 9$14.33, May 8 - Jun 4$12.08, Jun 4 3:00 pm$22.46, Apr 14 - Jul 9$14.33, Jun 7 7:33 am$12.00, Jun 7 7:33 am$22.46, Apr 14 - Jul 9$14.76, Jun 8 - Jun 9$11.95, Jun 8 5:24 pm$22.46, Apr 14 - Jul 9$14.76, Jun 10 - Jun 13$11.85, Jun 10 7:53 pm$22.46, Apr 14 - Jul 9$14.76, Jun 10 - Jun 13$9.97, Jun 12 7:47 am$22.46, Apr 14 - Jul 9$14.74, Jun 14 1:55 pm$6.93, Jun 14 1:55 pm$22.46, Apr 14 - Jul 9$14.33, Jun 15 - Jun 19$6.89, Jun 16 2:13 am$22.46, Apr 14 - Jul 9$14.33, Jun 15 - Jun 19$6.80, Jun 18 8:48 am$22.46, Apr 14 - Jul 9$14.51, Jun 19 10:40 pm$6.75, Jun 19 - Jul 6$22.46, Apr 14 - Jul 9$14.74, Jun 22 5:06 am$6.75, Jun 19 - Jul 6$22.46, Apr 14 - Jul 9$14.72, Jun 23 5:30 pm$6.75, Jun 19 - Jul 6$22.46, Apr 14 - Jul 9$14.76, Jun 26 1:16 am$6.75, Jun 19 - Jul 6$22.46, Apr 14 - Jul 9$14.75, Jun 27 2:50 pm$6.75, Jun 19 - Jul 6$22.46, Apr 14 - Jul 9$14.73, Jun 29 4:17 am$6.75, Jun 19 - Jul 6$22.46, Apr 14 - Jul 9$14.51, Jun 30 - Jul 6$6.75, Jun 19 - Jul 6$22.46, Apr 14 - Jul 9$14.76, Jul 8 - Jul 14$6.73, Jul 8 7:01 am$21.32, Jul 10 - Aug 9$14.76, Jul 8 - Jul 14$6.65, Jul 10 6:30 pm$21.32, Jul 10 - Aug 9$14.76, Jul 8 - Jul 14$6.60, Jul 12 12:12 am$21.32, Jul 10 - Aug 9$14.76, Jul 8 - Jul 14$6.51, Jul 14 3:32 pm$21.32, Jul 10 - Aug 9$14.97, Jul 16 2:33 am$6.44, Jul 16 2:33 am$21.32, Jul 10 - Aug 9$14.76, Jul 17 - Jul 29$6.36, Jul 18 5:39 pm$21.32, Jul 10 - Aug 9$14.76, Jul 17 - Jul 29$6.32, Jul 19 10:46 pm$21.32, Jul 10 - Aug 9$14.76, Jul 17 - Jul 29$6.25, Jul 21 6:32 pm$21.32, Jul 10 - Aug 9$14.76, Jul 17 - Jul 29$6.18, Jul 24 1:56 am$21.32, Jul 10 - Aug 9$14.76, Jul 17 - Jul 29$6.13, Jul 25 9:40 pm$21.32, Jul 10 - Aug 9$14.76, Jul 17 - Jul 29$6.07, Jul 27 4:23 pm$21.32, Jul 10 - Aug 9$14.76, Jul 17 - Jul 29$6.02, Jul 29 11:48 am$21.32, Jul 10 - Aug 9$14.80, Jul 31 7:36 am$5.93, Jul 31 7:36 am$21.32, Jul 10 - Aug 9$14.76, Aug 1 - Sep 3$5.89, Aug 2 3:15 am$21.32, Jul 10 - Aug 9$14.76, Aug 1 - Sep 3$5.88, Aug 3 12:34 am$21.32, Jul 10 - Aug 9$14.76, Aug 1 - Sep 3$5.84, Aug 5 7:33 pm$21.32, Jul 10 - Aug 9$14.76, Aug 1 - Sep 3$5.77, Aug 7 10:46 pm$21.64, Aug 10 - Aug 11$14.76, Aug 1 - Sep 3$5.57, Aug 10 2:06 am$21.64, Aug 10 - Aug 11$14.76, Aug 1 - Sep 3$5.49, Aug 11 10:52 pm$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$5.45, Aug 12 9:53 pm$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$5.35, Aug 15 8:49 am$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$8.92, Aug 17 5:33 pm$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$8.31, Aug 18 5:49 pm$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$7.14, Aug 21 12:26 am$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$6.93, Aug 22 10:21 pm$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$6.87, Aug 25 3:37 am$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$6.81, Aug 26 7:37 am$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$6.79, Aug 27 9:53 am$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$6.69, Aug 30 1:16 pm$21.95, Aug 12 - Aug 31$14.76, Aug 1 - Sep 3$6.65, Aug 31 5:53 pm$21.51, Sep 1 - Sep 18$14.76, Aug 1 - Sep 3$6.55, Sep 3 2:09 am$21.51, Sep 1 - Sep 18$14.75, Sep 4 - Sep 7$6.99, Sep 5 11:38 am$21.51, Sep 1 - Sep 18$14.75, Sep 4 - Sep 7$6.97, Sep 6 4:21 pm$21.51, Sep 1 - Sep 18$14.74, Sep 9 3:25 am$6.05, Sep 9 3:25 am$21.51, Sep 1 - Sep 18$14.73, Sep 10 7:35 am$6.03, Sep 10 7:35 am$21.51, Sep 1 - Sep 18$14.71, Sep 12 - Sep 14$5.87, Sep 12 4:06 pm$21.51, Sep 1 - Sep 18$14.71, Sep 12 - Sep 14$5.68, Sep 14 2:12 pm$21.51, Sep 1 - Sep 18$14.69, Sep 16 2:20 pm$5.55, Sep 16 2:20 pm$21.51, Sep 1 - Sep 18$14.67, Sep 18 - Sep 25$5.46, Sep 18 3:34 pm$21.18, Sep 20 - Oct 10$14.67, Sep 18 - Sep 25$5.26, Sep 20 4:18 pm$21.18, Sep 20 - Oct 10$14.67, Sep 18 - Sep 25$5.04, Sep 23 1:04 am$21.18, Sep 20 - Oct 10$14.67, Sep 18 - Sep 25$5.00, Sep 25 - Oct 3$21.18, Sep 20 - Oct 10$14.68, Sep 27 6:44 am$5.00, Sep 25 - Oct 3$21.18, Sep 20 - Oct 10$14.72, Sep 29 8:27 am$5.00, Sep 25 - Oct 3$21.18, Sep 20 - Oct 10$14.67, Oct 1 10:51 am$5.00, Sep 25 - Oct 3$21.18, Sep 20 - Oct 10$14.72, Oct 3 2:39 pm$5.00, Sep 25 - Oct 3$21.18, Sep 20 - Oct 10$14.69, Oct 5 4:12 pm$4.79, Oct 5 4:12 pm$21.18, Sep 20 - Oct 10$14.60, Oct 7 8:22 pm$4.77, Oct 7 8:22 pm$21.18, Sep 20 - Oct 10$14.58, Oct 10 12:02 am$4.74, Oct 10 12:02 am$21.36, Oct 12 - Nov 2$14.73, Oct 12 - Oct 16$4.71, Oct 12 3:39 am$21.36, Oct 12 - Nov 2$14.73, Oct 12 - Oct 16$4.38, Oct 14 6:11 am$21.36, Oct 12 - Nov 2$14.73, Oct 12 - Oct 16$4.24, Oct 16 9:47 am$21.36, Oct 12 - Nov 2$14.74, Oct 18 1:13 pm$4.06, Oct 18 1:13 pm$21.36, Oct 12 - Nov 2$14.73, Oct 20 - Nov 2$3.91, Oct 20 7:50 pm$21.36, Oct 12 - Nov 2$14.73, Oct 20 - Nov 2$3.63, Oct 23 3:10 am$21.36, Oct 12 - Nov 2$14.73, Oct 20 - Nov 2$2.24, Oct 28 3:14 am$21.36, Oct 12 - Nov 2$14.73, Oct 20 - Nov 2$1.98, Nov 2 7:11 am$21.53, Nov 9 - Nov 26$14.67, Nov 9 8:39 am$1.07, Nov 9 8:39 am$21.53, Nov 9 - Nov 26$14.57, Nov 14 3:36 pm$1.04, Nov 14 3:36 pm$21.53, Nov 9 - Nov 26$14.73, Nov 18 - Dec 10$0.94, Nov 18 2:42 am$21.53, Nov 9 - Nov 26$14.73, Nov 18 - Dec 10$0.81, Nov 20 11:28 am$21.53, Nov 9 - Nov 26$14.73, Nov 18 - Dec 10$0.70, Nov 22 - Nov 26$21.31, Nov 28 - Dec 16$14.73, Nov 18 - Dec 10$6.16, Nov 28 2:05 pm$21.31, Nov 28 - Dec 16$14.73, Nov 18 - Dec 10$7.32, Nov 30 - Dec 6$21.31, Nov 28 - Dec 16$14.73, Nov 18 - Dec 10$7.31, Dec 8 - Dec 12$21.31, Nov 28 - Dec 16$14.69, Dec 12 11:49 am$7.31, Dec 8 - Dec 12$21.31, Nov 28 - Dec 16$14.62, Dec 14 9:57 am$7.32, Dec 14 - Dec 17$20.60, Dec 17 - Dec 25$14.63, Dec 17 9:59 am$7.32, Dec 14 - Dec 17$20.60, Dec 17 - Dec 25$14.73, Dec 23 7:21 am$7.07, Dec 23 7:21 am$20.60, Dec 17 - Dec 25$14.76, Dec 25 - Dec 31$7.02, Dec 25 3:57 am$20.37, Dec 26 - Jan 4$14.76, Dec 25 - Dec 31$6.92, Dec 26 8:45 pm$20.37, Dec 26 - Jan 4$14.76, Dec 25 - Dec 31$6.86, Dec 28 10:40 pm$20.37, Dec 26 - Jan 4$14.76, Dec 25 - Dec 31$6.77, Dec 30 9:34 am$20.37, Dec 26 - Jan 4$14.76, Dec 25 - Dec 31$6.69, Dec 31 11:16 pm$20.37, Dec 26 - Jan 4$14.74, Jan 2 5:29 pm$6.59, Jan 2 5:29 pm$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$6.43, Jan 4 - Jan 5$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$6.16, Jan 7 8:47 am$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$6.02, Jan 9 10:58 am$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$5.93, Jan 10 - Jan 29$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$5.81, Jan 30 10:15 pm$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$5.57, Feb 1 5:16 pm$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$5.40, Feb 3 1:00 pm$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$5.25, Feb 5 6:59 am$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$4.94, Feb 7 2:06 am$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$4.65, Feb 8 - Feb 27$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$4.24, Mar 1 2:26 pm$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$3.77, Mar 3 - Mar 7$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$3.65, Mar 10 4:06 am$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$3.75, Mar 12 11:10 am$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$3.74, Mar 14 - Mar 17$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$3.73, Mar 19 9:17 pm$20.27, Jan 5 - Apr 23$14.73, Jan 4 - Mar 22$3.72, Mar 22 - Mar 29$20.27, Jan 5 - Apr 23$14.70, Mar 24 10:47 am$3.72, Mar 22 - Mar 29$20.27, Jan 5 - Apr 23$14.59, Mar 26 6:24 pm$3.72, Mar 22 - Mar 29$20.27, Jan 5 - Apr 23$14.56, Mar 29 2:53 am$3.72, Mar 22 - Mar 29$20.27, Jan 5 - Apr 23$14.48, Mar 31 11:41 am$3.71, Mar 31 - Apr 3$20.27, Jan 5 - Apr 23$14.43, Apr 3 3:38 am$3.71, Mar 31 - Apr 3$20.27, Jan 5 - Apr 23$14.37, Apr 5 - Apr 23$3.70, Apr 5 - Apr 8$20.27, Jan 5 - Apr 23$14.37, Apr 5 - Apr 23$3.69, Apr 11 9:19 am$20.27, Jan 5 - Apr 23$14.37, Apr 5 - Apr 23$3.68, Apr 14 - Apr 16$20.27, Jan 5 - Apr 23$14.37, Apr 5 - Apr 23$3.67, Apr 18 1:19 am$20.27, Jan 5 - Apr 23$14.37, Apr 5 - Apr 23$3.66, Apr 20 3:59 pm$20.27, Jan 5 - Apr 23$14.37, Apr 5 - Apr 23$3.65, Apr 23 9:38 am$20.27, Apr 26 - May 19$14.37, Apr 26 - May 4$3.64, Apr 26 - May 2$20.27, Apr 26 - May 19$14.37, Apr 26 - May 4$3.63, May 4 8:41 pm$20.27, Apr 26 - May 19$14.76, May 8 9:13 am$6.49, May 8 - May 11$20.27, Apr 26 - May 19$14.59, May 11 6:19 pm$6.49, May 8 - May 11$20.27, Apr 26 - May 19$6.45, May 14 10:40 pm$6.44, May 14 10:40 pm$20.27, Apr 26 - May 19$6.31, May 19 4:31 am$6.31, May 19 4:31 am$20.56, May 23 - Jun 5$6.19, May 23 9:02 am$6.16, May 23 9:02 am$20.56, May 23 - Jun 5$5.91, May 27 4:00 pm$5.91, May 27 4:00 pm$20.56, May 23 - Jun 5$5.70, Jun 1 6:34 am$5.68, Jun 1 6:34 am$20.56, May 23 - Jun 5$5.51, Jun 5 9:36 pm$5.51, Jun 5 9:36 pm$20.85, Jun 10 3:08 am$5.36, Jun 10 3:08 am$5.36, Jun 10 3:08 am$23.69, Jun 13 - Jul 13$5.15, Jun 13 11:48 pm$5.13, Jun 13 11:48 pm$23.69, Jun 13 - Jul 13$4.85, Jun 17 4:46 pm$4.84, Jun 17 4:46 pm$23.69, Jun 13 - Jul 13$14.30, Jun 21 11:50 am$4.55, Jun 21 11:50 am$23.69, Jun 13 - Jul 13$4.35, Jun 25 7:01 am$4.35, Jun 25 7:01 am$23.69, Jun 13 - Jul 13$4.06, Jun 29 9:20 am$4.06, Jun 29 9:20 am$23.69, Jun 13 - Jul 13$3.78, Jul 3 2:03 pm$3.77, Jul 3 2:03 pm$23.69, Jun 13 - Jul 13$3.51, Jul 7 7:25 pm$3.48, Jul 7 7:25 pm$23.69, Jun 13 - Jul 13$3.14, Jul 13 3:22 am$3.11, Jul 13 3:22 am$23.45, Jul 16 - Aug 7$2.95, Jul 16 - Jul 24$2.90, Jul 16 7:35 pm$23.45, Jul 16 - Aug 7$2.95, Jul 16 - Jul 24$2.62, Jul 20 11:25 am$23.45, Jul 16 - Aug 7$2.95, Jul 16 - Jul 24$2.92, Jul 24 1:18 am$23.45, Jul 16 - Aug 7$14.76, Jul 27 - Sep 22$3.35, Jul 27 2:44 pm$23.45, Jul 16 - Aug 7$14.76, Jul 27 - Sep 22$4.49, Jul 31 5:20 am$23.45, Jul 16 - Aug 7$14.76, Jul 27 - Sep 22$4.24, Aug 3 6:44 pm$23.45, Jul 16 - Aug 7$14.76, Jul 27 - Sep 22$3.96, Aug 7 9:28 am$23.21, Aug 11 - Aug 30$14.76, Jul 27 - Sep 22$3.58, Aug 11 6:24 am$23.21, Aug 11 - Aug 30$14.76, Jul 27 - Sep 22$3.24, Aug 15 1:09 am$23.21, Aug 11 - Aug 30$14.76, Jul 27 - Sep 22$3.02, Aug 18 6:05 pm$23.21, Aug 11 - Aug 30$14.76, Jul 27 - Sep 22$2.68, Aug 22 12:10 pm$23.21, Aug 11 - Aug 30$14.76, Jul 27 - Sep 22$2.56, Aug 26 6:50 am$23.21, Aug 11 - Aug 30$14.76, Jul 27 - Sep 22$2.47, Aug 30 1:09 am$22.97, Sep 2 - Sep 18$14.76, Jul 27 - Sep 22$2.49, Sep 2 - Sep 6$22.97, Sep 2 - Sep 18$14.76, Jul 27 - Sep 22$2.45, Sep 10 3:27 pm$22.97, Sep 2 - Sep 18$14.76, Jul 27 - Sep 22$2.46, Sep 14 - Sep 18$22.73, Sep 22 - Oct 8$14.76, Jul 27 - Sep 22$2.49, Sep 22 7:13 am$22.73, Sep 22 - Oct 8$14.46, Sep 26 - Oct 8$2.29, Sep 26 5:29 am$22.73, Sep 22 - Oct 8$14.46, Sep 26 - Oct 8$2.42, Sep 30 4:12 am$22.73, Sep 22 - Oct 8$14.46, Sep 26 - Oct 8$1.75, Oct 4 6:13 am$22.73, Sep 22 - Oct 8$14.46, Sep 26 - Oct 8$1.05, Oct 8 8:51 am$22.50, Oct 12 - Oct 28$14.20, Oct 12 - Oct 16$0.32, Oct 12 10:14 am$22.50, Oct 12 - Oct 28$14.20, Oct 12 - Oct 16$0.01, Oct 16 - Oct 20$22.50, Oct 12 - Oct 28$14.46, Oct 20 - Dec 1$0.01, Oct 16 - Oct 20$22.50, Oct 12 - Oct 28$14.46, Oct 20 - Dec 1$2.42, Oct 24 3:03 am$22.50, Oct 12 - Oct 28$14.46, Oct 20 - Dec 1$2.46, Oct 28 1:17 am$22.52, Nov 1 - Nov 17$14.46, Oct 20 - Dec 1$2.37, Nov 1 1:15 am$22.52, Nov 1 - Nov 17$14.46, Oct 20 - Dec 1$2.39, Nov 5 1:45 am$22.52, Nov 1 - Nov 17$14.46, Oct 20 - Dec 1$2.37, Nov 9 4:31 am$22.52, Nov 1 - Nov 17$14.46, Oct 20 - Dec 1$2.32, Nov 13 - Nov 17$22.54, Nov 21 - Dec 6$14.46, Oct 20 - Dec 1$2.08, Nov 21 11:37 pm$22.54, Nov 21 - Dec 6$14.46, Oct 20 - Dec 1$1.66, Nov 26 10:27 am$22.54, Nov 21 - Dec 6$14.46, Oct 20 - Dec 1$1.24, Dec 1 6:46 am$22.54, Nov 21 - Dec 6$14.74, Dec 6 - Dec 16$0.30, Dec 6 3:57 am$23.06, Dec 11 - Dec 26$14.74, Dec 6 - Dec 16$0.01, Dec 11 - Dec 16$23.06, Dec 11 - Dec 26$14.76, Dec 21 5:17 am$0.34, Dec 21 5:17 am$23.06, Dec 11 - Dec 26$14.74, Dec 26 - Dec 31$1.82, Dec 26 6:48 pm$23.57, Dec 31 - Jan 14$14.74, Dec 26 - Dec 31$0.48, Dec 31 10:28 am$23.57, Dec 31 - Jan 14$14.73, Jan 5 4:06 am$1.95, Jan 5 4:06 am$23.57, Dec 31 - Jan 14$14.74, Jan 10 1:15 am$1.92, Jan 10 1:15 am$23.57, Dec 31 - Jan 14$14.73, Jan 14 11:31 pm$1.96, Jan 14 11:31 pm$23.33, Jan 19 11:43 pm$14.74, Jan 19 - Feb 4$1.92, Jan 19 11:43 pm$23.69, Jan 25 - Feb 9$14.74, Jan 19 - Feb 4$1.72, Jan 25 12:09 am$23.69, Jan 25 - Feb 9$14.74, Jan 19 - Feb 4$1.28, Jan 30 12:21 am$23.69, Jan 25 - Feb 9$14.74, Jan 19 - Feb 4$1.01, Feb 4 2:31 am$23.69, Jan 25 - Feb 9$14.49, Feb 9 - Feb 14$0.85, Feb 9 4:20 am$23.45, Feb 14 - Mar 6$14.49, Feb 9 - Feb 14$0.74, Feb 14 11:00 am$23.45, Feb 14 - Mar 6$14.45, Feb 19 7:03 pm$0.94, Feb 19 7:03 pm$23.45, Feb 14 - Mar 6$14.44, Feb 25 - Mar 17$0.92, Feb 25 8:00 am$23.45, Feb 14 - Mar 6$14.44, Feb 25 - Mar 17$1.41, Mar 6 7:36 am$23.21, Mar 17 6:49 pm$14.44, Feb 25 - Mar 17$1.47, Mar 17 6:49 pm$22.97, Mar 29 7:48 am$13.99, Mar 29 7:48 am$5.99, Mar 29 7:48 am 92,3701,938,533 1,562,500 1,171,875 781,250 390,625 Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr 2015 2016

Price Details

New

Last Seen $22.97 Mar 29, '16
Highest $23.69 Jan 25, '16
Lowest $20.27 Apr 26, '15
Average $23.36 (30d avg)
$23.49 (90d avg)
$23.07 (180d avg)
$22.59 (365d avg)
$21.99 (Lifetime average)
Added Apr 14, 2014

3rd Party New

Last Seen $13.99 Mar 29, '16
Highest $14.97 Jul 16, '14
Lowest $2.95 Jul 16, '15
Average $14.44 (30d avg)
$14.58 (90d avg)
$14.55 (180d avg)
$12.67 (365d avg)
$13.63 (Lifetime average)
Added Apr 14, 2014

3rd Party Used

Last Seen $5.99 Mar 29, '16
Highest $12.11 Jun 3, '14
Lowest $0.01 Dec 11, '15
Average $1.44 (30d avg)
$1.32 (90d avg)
$1.32 (180d avg)
$2.64 (365d avg)
$3.98 (Lifetime average)
Added Apr 14, 2014

Sales Rank

30 day average: 1,598,459
90 day average: 1,597,175

Product Description

An intriguing combination of invention and toy making, this guideencourages students to work in teams to design and fabricate working toys while learning the fundamentals of science, design, tool usage, and the creative process. Toys range from cars to electric fans to rockets, and the trial-and-error process that students use to build these toys allows them to refine their models through experimentationbuilding, conducting tests, collecting and interpreting data, and making changes or improvements to their inventions. There are directions for seven workshops and suggestions for five more, and the science concepts and historical background involved in each project are explained for teachers.

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