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Buy from Amazon $42.24$16.00 $45.00 $35.00 $25.00 Aug Sep Oct Nov Dec Jan Feb Mar Apr 2016 $32.43, Jul 15 9:18 pm$24.91, Jul 19 - Aug 2$24.78, Aug 4 - Aug 10$24.65, Aug 14 - Aug 16$24.52, Aug 18 - Aug 23$24.39, Aug 25 - Aug 31OOS $24.26, Sep 2 - Sep 4$24.26, Sep 8 - Sep 10$25.45, Sep 10 - Sep 21$24.26, Sep 8 - Sep 10$19.77, Sep 10 - Sep 21$25.45, Sep 10 - Sep 21$24.13, Sep 12 - Sep 14$19.77, Sep 10 - Sep 21$25.45, Sep 10 - Sep 21$24.01, Sep 16 6:48 am$19.77, Sep 10 - Sep 21$25.45, Sep 10 - Sep 21$23.89, Sep 18 6:22 am$19.77, Sep 10 - Sep 21$25.45, Sep 10 - Sep 21$23.77, Sep 20 - Sep 21$19.77, Sep 10 - Sep 21$42.24, Sep 22 - Sep 29$23.64, Sep 22 - Sep 23$19.63, Sep 22 - Sep 23$42.24, Sep 22 - Sep 29$23.52, Sep 24 - Sep 25$19.52, Sep 24 - Sep 25$42.24, Sep 22 - Sep 29$23.40, Sep 26 - Sep 27$19.64, Sep 26 2:01 pm$42.24, Sep 22 - Sep 29$23.40, Sep 26 - Sep 27$19.77, Sep 27 - Oct 5$42.24, Sep 22 - Sep 29$23.28, Sep 28 - Sep 29$19.77, Sep 27 - Oct 5$42.07, Oct 1 - Oct 6$23.74, Oct 1 - Oct 5$19.77, Sep 27 - Oct 5$42.07, Oct 1 - Oct 6$24.21, Oct 6 - Oct 12$19.76, Oct 6 - Oct 27$27.84, Oct 7 - Oct 22$24.21, Oct 6 - Oct 12$19.76, Oct 6 - Oct 27$27.84, Oct 7 - Oct 22$24.69, Oct 13 - Oct 21$19.76, Oct 6 - Oct 27$27.84, Oct 7 - Oct 22$25.18, Oct 22 - Oct 24$19.76, Oct 6 - Oct 27$25.64, Oct 23 - Oct 27$25.18, Oct 22 - Oct 24$19.76, Oct 6 - Oct 27$25.64, Oct 23 - Oct 27$25.05, Oct 25 - Oct 26$19.76, Oct 6 - Oct 27$25.64, Oct 23 - Oct 27$24.92, Oct 27 8:56 pm$19.76, Oct 6 - Oct 27$25.79, Oct 28 9:21 pm$24.79, Oct 28 9:21 pm$20.54, Oct 28 - Oct 29$27.07, Oct 29 9:57 pm$24.66, Oct 29 9:57 pm$20.54, Oct 28 - Oct 29$25.65, Oct 30 3:19 pm$24.53, Oct 30 - Nov 1$20.53, Oct 30 - Oct 31$27.07, Oct 31 4:16 pm$24.53, Oct 30 - Nov 1$20.53, Oct 30 - Oct 31$25.79, Nov 1 - Nov 2$24.53, Oct 30 - Nov 1$19.76, Nov 1 4:46 pm$25.79, Nov 1 - Nov 2$24.27, Nov 2 - Nov 3$20.27, Nov 2 - Nov 4$27.18, Nov 3 - Nov 4$24.27, Nov 2 - Nov 3$20.27, Nov 2 - Nov 4$27.18, Nov 3 - Nov 4$24.15, Nov 4 - Nov 6$20.27, Nov 2 - Nov 4$26.82, Nov 6 - Nov 8$24.15, Nov 4 - Nov 6$20.15, Nov 6 12:25 am$26.82, Nov 6 - Nov 8$24.02, Nov 7 - Nov 8$20.02, Nov 7 - Nov 8$26.81, Nov 9 - Nov 10$23.89, Nov 9 - Nov 10$19.89, Nov 9 - Nov 10$23.77, Nov 11 12:54 pm$20.20, Nov 11 12:54 pm$19.76, Nov 11 12:54 pm$27.42, Nov 12 3:30 pm$23.64, Nov 12 3:30 pm$19.64, Nov 12 3:30 pm$26.90, Nov 13 - Nov 14$23.52, Nov 13 - Nov 14$19.51, Nov 13 - Nov 14$27.21, Nov 16 12:31 am$23.40, Nov 16 - Nov 17$19.40, Nov 16 - Nov 17$26.51, Nov 17 4:28 am$23.40, Nov 16 - Nov 17$19.40, Nov 16 - Nov 17$24.77, Nov 18 - Nov 19$23.28, Nov 18 7:34 am$19.28, Nov 18 7:34 am$24.77, Nov 18 - Nov 19$23.16, Nov 19 12:04 pm$19.16, Nov 19 12:04 pm$24.50, Nov 20 4:52 pm$23.04, Nov 20 4:52 pm$19.04, Nov 20 4:52 pm$24.49, Nov 21 - Nov 23$22.92, Nov 21 - Nov 23$18.92, Nov 21 - Nov 23$24.46, Nov 24 7:11 am$22.68, Nov 24 7:11 am$18.80, Nov 24 7:11 am$24.43, Nov 25 12:17 pm$22.89, Nov 25 12:17 pm$18.89, Nov 25 12:17 pm$24.39, Nov 26 5:17 pm$22.77, Nov 26 5:17 pm$18.77, Nov 26 5:17 pm$24.09, Nov 27 11:10 pm$23.01, Nov 27 11:10 pm$19.01, Nov 27 11:10 pm$23.93, Nov 29 5:31 am$23.35, Nov 29 5:31 am$19.35, Nov 29 5:31 am$23.69, Nov 30 11:42 am$23.68, Nov 30 11:42 am$19.51, Nov 30 - Dec 4$24.04, Dec 1 6:12 pm$23.65, Dec 1 6:12 pm$19.51, Nov 30 - Dec 4$24.40, Dec 3 12:18 am$23.63, Dec 3 12:18 am$19.51, Nov 30 - Dec 4$24.76, Dec 4 6:18 am$23.57, Dec 4 6:18 am$19.51, Nov 30 - Dec 4$23.31, Dec 5 11:43 am$23.24, Dec 5 - Dec 20$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$23.21, Dec 6 6:55 pm$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$23.15, Dec 8 1:49 am$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$23.12, Dec 9 9:32 am$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$23.09, Dec 10 5:58 pm$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$22.99, Dec 12 1:41 am$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$22.97, Dec 13 9:38 am$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$22.95, Dec 14 5:23 pm$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$22.93, Dec 16 1:35 am$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$22.89, Dec 17 9:13 am$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$22.86, Dec 18 5:29 pm$19.24, Dec 5 - Dec 18$23.24, Dec 5 - Dec 20$22.83, Dec 20 1:07 am$21.55, Dec 20 1:07 am$23.35, Dec 21 8:14 am$22.82, Dec 21 8:14 am$22.22, Dec 21 8:14 am$23.46, Dec 22 3:13 pm$23.00, Dec 22 - Dec 30$22.23, Dec 22 - Dec 29$23.57, Dec 23 9:12 pm$23.00, Dec 22 - Dec 30$22.23, Dec 22 - Dec 29$23.68, Dec 25 3:02 am$23.00, Dec 22 - Dec 30$22.23, Dec 22 - Dec 29$23.79, Dec 26 1:54 pm$23.00, Dec 22 - Dec 30$22.23, Dec 22 - Dec 29$23.90, Dec 27 - Dec 29$23.00, Dec 22 - Dec 30$22.23, Dec 22 - Dec 29$24.02, Dec 30 2:51 pm$23.00, Dec 22 - Dec 30$22.23, Dec 22 - Dec 29$24.50, Dec 31 - Jan 5$24.13, Dec 31 7:45 pm$19.77, Dec 31 - Jan 5$24.50, Dec 31 - Jan 5$24.37, Jan 2 1:00 am$19.77, Dec 31 - Jan 5$24.50, Dec 31 - Jan 5$24.49, Jan 3 6:20 am$19.77, Dec 31 - Jan 5$24.61, Jan 4 11:23 am$24.50, Dec 31 - Jan 5$19.77, Dec 31 - Jan 5$24.73, Jan 5 4:17 pm$24.50, Dec 31 - Jan 5$19.77, Dec 31 - Jan 5$24.45, Jan 6 9:49 pm$23.24, Jan 6 - Jan 10$19.24, Jan 6 9:49 pm$24.10, Jan 8 5:14 am$23.24, Jan 6 - Jan 10$19.77, Jan 8 5:14 am$23.24, Jan 6 - Jan 10$19.98, Jan 9 12:22 pm$19.24, Jan 9 12:22 pm$23.24, Jan 6 - Jan 10$19.99, Jan 10 - Jan 12$19.77, Jan 10 - Jan 12$23.35, Jan 12 - Jan 13$19.99, Jan 10 - Jan 12$19.77, Jan 10 - Jan 12$23.35, Jan 12 - Jan 13$19.97, Jan 13 - Jan 14$19.35, Jan 13 10:00 am$23.24, Jan 14 - Mar 14$19.97, Jan 13 - Jan 14$19.24, Jan 14 - Jan 21$23.24, Jan 14 - Mar 14$19.96, Jan 16 12:44 am$19.24, Jan 14 - Jan 21$23.24, Jan 14 - Mar 14$19.93, Jan 17 7:39 am$19.24, Jan 14 - Jan 21$23.24, Jan 14 - Mar 14$19.92, Jan 18 - Jan 19$19.24, Jan 14 - Jan 21$23.24, Jan 14 - Mar 14$19.88, Jan 21 6:41 am$19.24, Jan 14 - Jan 21$23.24, Jan 14 - Mar 14$19.86, Jan 22 3:01 pm$19.12, Jan 22 3:01 pm$23.24, Jan 14 - Mar 14$19.83, Jan 23 11:12 pm$18.94, Jan 23 11:12 pm$23.24, Jan 14 - Mar 14$19.77, Jan 26 12:43 pm$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.75, Jan 27 9:03 pm$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.72, Jan 29 5:04 am$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.66, Jan 30 12:31 pm$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.63, Jan 31 8:00 pm$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.60, Feb 2 3:25 am$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.57, Feb 3 10:58 am$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.54, Feb 4 7:36 pm$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.39, Feb 11 3:29 am$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.36, Feb 12 12:05 pm$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.32, Feb 13 8:45 pm$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.29, Feb 15 6:25 am$19.24, Jan 26 - Feb 15$23.24, Jan 14 - Mar 14$19.24, Feb 16 3:57 pm$19.23, Feb 16 - Mar 11$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$19.20, Feb 18 1:48 am$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$19.18, Feb 19 11:26 am$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$19.17, Feb 20 9:02 pm$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$19.15, Feb 22 7:31 am$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$19.14, Feb 23 6:28 pm$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$19.13, Feb 25 5:08 am$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$19.09, Feb 26 3:15 pm$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$19.08, Feb 28 12:48 am$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$19.04, Feb 29 1:46 pm$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$18.98, Mar 2 1:41 pm$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$18.94, Mar 5 1:53 am$23.24, Jan 14 - Mar 14$19.69, Mar 7 10:40 pm$19.23, Feb 16 - Mar 11$23.24, Jan 14 - Mar 14$19.23, Feb 16 - Mar 11$18.81, Mar 11 5:50 am$23.24, Jan 14 - Mar 14$19.70, Mar 14 12:15 pm$19.24, Mar 14 - Mar 17$24.30, Mar 17 12:31 pm$19.99, Mar 17 12:31 pm$19.24, Mar 14 - Mar 17$23.24, Mar 20 - Mar 23$19.23, Mar 20 - Mar 23$16.00, Mar 20 1:01 pm$23.24, Mar 20 - Mar 23$19.23, Mar 20 - Mar 23$18.65, Mar 23 - Mar 29$22.64, Mar 26 - Mar 29$18.65, Mar 23 - Mar 29$18.64, Mar 26 - Mar 29 1,467705,705 781,250 625,000 468,750 312,500 156,250 Aug Sep Oct Nov Dec Jan Feb Mar Apr 2016

Price Details

New

Latest $22.64 1 day ago
Highest $32.43 Jul 15, '15
Lowest $22.64 Mar 26, '16
Average $23.29 (30d avg)
$23.34 (90d avg)
$23.61 (180d avg)
$23.96 (Lifetime average)
Added Jul 15, 2015

3rd Party New

Latest $18.64 1 day ago
Highest $22.23 Dec 22, '15
Lowest $18.64 Mar 26, '16
Average $19.17 (30d avg)
$19.27 (90d avg)
$19.60 (180d avg)
$19.61 (Lifetime average)
Added Jul 15, 2015

3rd Party Used

Latest $18.65 1 day ago
Highest $42.24 Sep 22, '15
Lowest $16.00 Mar 20, '16
Average $18.84 (30d avg)
$19.81 (90d avg)
$23.01 (180d avg)
$24.06 (Lifetime average)
Added Jul 15, 2015

Sales Rank

30 day average: 4,689
90 day average: 5,075

Product Description

"This is teaching at its best!"

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