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Buy from Amazon $6.95$0.01 $7.50 $5.00 $2.50 May Aug Nov Feb May Aug Nov Feb May 2014 2015 2016 $5.68, Feb 10 - Apr 9$5.31, Apr 10 - May 1$5.68, May 1 - May 7$5.68, May 1 - May 7$2.85, May 2 - May 4$1.19, May 3 - May 4$5.68, May 1 - May 7$1.45, May 6 - May 7$1.16, May 6 2:33 am$5.31, May 8 - Jun 23$1.25, May 8 - May 20$1.13, May 8 - May 13$5.31, May 8 - Jun 23$1.25, May 8 - May 20$1.11, May 14 11:17 pm$5.31, May 8 - Jun 23$1.25, May 8 - May 20$1.10, May 18 12:54 am$5.31, May 8 - Jun 23$1.25, May 8 - May 20$1.12, May 20 9:18 am$5.31, May 8 - Jun 23$1.25, May 22 8:46 pm$1.09, May 22 8:46 pm$5.31, May 8 - Jun 23$1.24, May 23 - May 26$1.05, May 24 8:17 pm$5.31, May 8 - Jun 23$1.25, May 26 10:07 pm$1.24, May 26 - May 27$5.31, May 8 - Jun 23$1.25, May 28 4:06 am$1.17, May 28 6:41 pm$5.31, May 8 - Jun 23$1.25, May 31 - Jun 3$1.23, Jun 1 4:09 pm$5.31, May 8 - Jun 23$1.25, May 31 - Jun 3$1.16, Jun 3 3:44 pm$5.31, May 8 - Jun 23$1.25, Jun 5 12:33 am$1.12, Jun 5 12:33 am$5.31, May 8 - Jun 23$1.24, Jun 6 - Jul 23$1.05, Jun 8 7:46 am$5.31, May 8 - Jun 23$1.24, Jun 6 - Jul 23$1.01, Jun 9 4:48 pm$5.31, May 8 - Jun 23$1.24, Jun 6 - Jul 23$0.96, Jun 12 1:16 am$5.31, May 8 - Jun 23$1.24, Jun 6 - Jul 23$0.91, Jun 14 2:32 am$5.31, May 8 - Jun 23$1.24, Jun 6 - Jul 23$0.86, Jun 16 7:15 am$5.31, May 8 - Jun 23$1.24, Jun 6 - Jul 23$0.81, Jun 17 7:56 pm$5.31, May 8 - Jun 23$1.24, Jun 6 - Jul 23$0.76, Jun 20 2:51 am$5.31, May 8 - Jun 23$1.24, Jun 6 - Jul 23$0.71, Jun 22 8:39 am$6.25, Jun 23 - Oct 8$1.24, Jun 6 - Jul 23$0.66, Jun 23 - Aug 13$6.25, Jun 23 - Oct 8$1.23, Jul 24 - Jul 25$0.66, Jun 23 - Aug 13$6.25, Jun 23 - Oct 8$1.22, Jul 28 11:41 am$0.66, Jun 23 - Aug 13$6.25, Jun 23 - Oct 8$1.20, Jul 31 5:00 am$0.66, Jun 23 - Aug 13$6.25, Jun 23 - Oct 8$1.19, Aug 3 7:19 pm$0.66, Jun 23 - Aug 13$6.25, Jun 23 - Oct 8$1.17, Aug 4 - Aug 5$0.66, Jun 23 - Aug 13$6.25, Jun 23 - Oct 8$1.14, Aug 9 - Aug 10$0.66, Jun 23 - Aug 13$6.25, Jun 23 - Oct 8$1.12, Aug 11 6:03 pm$0.66, Jun 23 - Aug 13$6.25, Jun 23 - Oct 8$1.11, Aug 13 - Aug 15$0.59, Aug 14 2:43 pm$6.25, Jun 23 - Oct 8$1.09, Aug 16 - Aug 18$0.47, Aug 16 12:06 pm$6.25, Jun 23 - Oct 8$1.09, Aug 16 - Aug 18$0.33, Aug 18 5:26 pm$6.25, Jun 23 - Oct 8$1.07, Aug 19 10:44 pm$0.25, Aug 19 10:44 pm$6.25, Jun 23 - Oct 8$1.05, Aug 21 11:57 pm$0.15, Aug 21 11:57 pm$6.25, Jun 23 - Oct 8$1.03, Aug 24 2:29 am$0.12, Aug 22 - Aug 30$6.25, Jun 23 - Oct 8$1.08, Aug 26 5:24 am$0.12, Aug 22 - Aug 30$6.25, Jun 23 - Oct 8$1.01, Aug 27 - Aug 28$0.12, Aug 22 - Aug 30$6.25, Jun 23 - Oct 8$1.06, Aug 30 6:49 pm$0.12, Aug 22 - Aug 30$6.25, Jun 23 - Oct 8$0.97, Aug 31 11:01 pm$0.11, Aug 31 11:01 pm$6.25, Jun 23 - Oct 8$1.04, Sep 3 - Sep 4$0.12, Sep 3 - Sep 5$6.25, Jun 23 - Oct 8$0.95, Sep 5 4:10 pm$0.12, Sep 3 - Sep 5$6.25, Jun 23 - Oct 8$0.94, Sep 8 1:02 am$0.06, Sep 8 1:02 am$6.25, Jun 23 - Oct 8$1.00, Sep 9 - Sep 10$0.01, Sep 9 - Oct 16$6.25, Jun 23 - Oct 8$0.99, Sep 11 3:56 pm$0.01, Sep 9 - Oct 16$6.25, Jun 23 - Oct 8$0.91, Sep 14 - Sep 15$0.01, Sep 9 - Oct 16$6.25, Jun 23 - Oct 8$0.96, Sep 16 3:58 am$0.01, Sep 9 - Oct 16$6.25, Jun 23 - Oct 8$0.89, Sep 18 6:59 am$0.01, Sep 9 - Oct 16$6.25, Jun 23 - Oct 8$0.94, Sep 19 - Sep 20$0.01, Sep 9 - Oct 16$6.25, Jun 23 - Oct 8$0.86, Sep 22 5:55 pm$0.01, Sep 9 - Oct 16$6.25, Jun 23 - Oct 8$0.91, Sep 26 12:02 am$0.01, Sep 9 - Oct 16$6.25, Jun 23 - Oct 8$1.25, Sep 28 - Oct 16$0.01, Sep 9 - Oct 16$4.39, Oct 9 - Oct 13$1.25, Sep 28 - Oct 16$0.01, Sep 9 - Oct 16$6.25, Oct 15 - Oct 23$1.25, Sep 28 - Oct 16$0.01, Sep 9 - Oct 16$6.25, Oct 15 - Oct 23$2.93, Oct 19 - Oct 21$0.12, Oct 19 - Oct 20$6.25, Oct 15 - Oct 23$3.28, Oct 22 - Oct 23$3.27, Oct 22 12:50 pm$6.25, Oct 15 - Oct 23$3.28, Oct 22 - Oct 23$2.26, Oct 23 5:28 pm$6.25, Oct 15 - Oct 23$3.27, Oct 29 - Nov 8$1.69, Oct 29 8:19 am$5.68, Nov 3 - Nov 21$3.27, Oct 29 - Nov 8$1.62, Nov 3 9:13 pm$5.68, Nov 3 - Nov 21$3.27, Oct 29 - Nov 8$1.54, Nov 8 2:44 am$5.68, Nov 3 - Nov 21$3.25, Nov 13 - Nov 16$1.42, Nov 13 10:03 am$5.68, Nov 3 - Nov 21$3.25, Nov 13 - Nov 16$1.38, Nov 16 1:17 am$5.68, Nov 3 - Nov 21$3.26, Nov 17 - Nov 19$1.69, Nov 17 - Nov 23$5.68, Nov 3 - Nov 21$3.25, Nov 21 - Nov 24$1.69, Nov 17 - Nov 23$5.62, Nov 23 - Dec 3$3.25, Nov 21 - Nov 24$1.63, Nov 24 3:01 pm$5.62, Nov 23 - Dec 3$3.23, Nov 26 - Nov 27$1.59, Nov 26 5:55 pm$5.62, Nov 23 - Dec 3$3.22, Nov 28 - Nov 29$1.57, Nov 28 5:13 pm$5.62, Nov 23 - Dec 3$3.21, Nov 30 - Dec 17$1.54, Nov 30 5:11 pm$5.62, Nov 23 - Dec 3$3.21, Nov 30 - Dec 17$1.46, Dec 2 5:30 pm$5.68, Dec 4 - Feb 12$3.21, Nov 30 - Dec 17$1.39, Dec 4 5:10 pm$5.68, Dec 4 - Feb 12$3.21, Nov 30 - Dec 17$1.33, Dec 6 4:47 pm$5.68, Dec 4 - Feb 12$3.21, Nov 30 - Dec 17$1.27, Dec 8 6:26 pm$5.68, Dec 4 - Feb 12$3.21, Nov 30 - Dec 17$1.21, Dec 11 12:11 am$5.68, Dec 4 - Feb 12$3.21, Nov 30 - Dec 17$1.18, Dec 12 1:17 am$5.68, Dec 4 - Feb 12$3.21, Nov 30 - Dec 17$1.12, Dec 15 12:45 am$5.68, Dec 4 - Feb 12$3.21, Nov 30 - Dec 17$1.07, Dec 17 12:04 am$5.68, Dec 4 - Feb 12$3.19, Dec 21 - Jan 2$0.41, Dec 21 8:56 pm$5.68, Dec 4 - Feb 12$3.19, Dec 21 - Jan 2$0.85, Jan 2 2:49 pm$5.68, Dec 4 - Feb 12$3.17, Jan 12 5:19 pm$0.86, Jan 12 - Jan 30$5.68, Dec 4 - Feb 12$3.16, Jan 14 6:46 am$0.86, Jan 12 - Jan 30$5.68, Dec 4 - Feb 12$3.15, Jan 15 - Jan 27$0.86, Jan 12 - Jan 30$5.68, Dec 4 - Feb 12$3.14, Jan 28 - Jan 29$0.86, Jan 12 - Jan 30$5.68, Dec 4 - Feb 12$3.13, Jan 30 - Jan 31$0.86, Jan 12 - Jan 30$5.68, Dec 4 - Feb 12$3.12, Feb 1 - Feb 2$1.31, Jan 31 - Feb 4$5.68, Dec 4 - Feb 12$3.11, Feb 3 - Feb 15$1.31, Jan 31 - Feb 4$5.68, Dec 4 - Feb 12$3.11, Feb 3 - Feb 15$1.11, Feb 5 - Feb 8$5.68, Dec 4 - Feb 12$3.11, Feb 3 - Feb 15$1.10, Feb 10 5:02 am$5.68, Dec 4 - Feb 12$3.11, Feb 3 - Feb 15$0.84, Feb 11 11:56 pm$6.88, Feb 13 - Apr 4$3.11, Feb 3 - Feb 15$0.48, Feb 13 8:39 pm$6.88, Feb 13 - Apr 4$3.11, Feb 3 - Feb 15$0.17, Feb 15 5:01 pm$6.88, Feb 13 - Apr 4$2.88, Feb 17 - Mar 18$0.01, Feb 17 - Mar 23$6.88, Feb 13 - Apr 4$2.87, Mar 19 - Mar 22$0.01, Feb 17 - Mar 23$6.88, Feb 13 - Apr 4$2.88, Mar 23 - Apr 25$0.01, Feb 17 - Mar 23$6.88, Feb 13 - Apr 4$2.88, Mar 23 - Apr 25$0.78, Mar 24 9:24 am$6.88, Feb 13 - Apr 4$2.88, Mar 23 - Apr 25$0.79, Mar 26 4:58 pm$6.88, Feb 13 - Apr 4$2.88, Mar 23 - Apr 25$0.71, Mar 27 9:17 pm$6.88, Feb 13 - Apr 4$2.88, Mar 23 - Apr 25$0.30, Mar 30 - Mar 31$6.88, Feb 13 - Apr 4$2.88, Mar 23 - Apr 25$0.19, Apr 1 9:00 pm$6.88, Feb 13 - Apr 4$2.88, Mar 23 - Apr 25$0.03, Apr 4 1:33 pm$6.95, Apr 28 - Jul 9$2.88, Apr 28 - Jun 4$0.01, Apr 28 - Jul 9$6.95, Apr 28 - Jul 9$2.95, Jun 6 - Jun 18$0.01, Apr 28 - Jul 9$6.95, Apr 28 - Jul 9$2.94, Jun 22 - Jul 15$0.01, Apr 28 - Jul 9$6.23, Jul 13 - Aug 12$2.94, Jun 22 - Jul 15$0.31, Jul 13 10:29 pm$6.23, Jul 13 - Aug 12$2.94, Jun 22 - Jul 15$0.35, Jul 15 9:06 pm$6.23, Jul 13 - Aug 12$2.93, Jul 19 9:25 am$0.36, Jul 19 9:25 am$6.23, Jul 13 - Aug 12$2.92, Jul 22 11:53 pm$2.19, Jul 22 11:53 pm$6.23, Jul 13 - Aug 12$2.91, Jul 24 7:28 pm$2.22, Jul 24 - Aug 8$6.23, Jul 13 - Aug 12$2.90, Jul 28 8:13 am$2.22, Jul 24 - Aug 8$6.23, Jul 13 - Aug 12$2.89, Jul 30 5:46 am$2.22, Jul 24 - Aug 8$6.23, Jul 13 - Aug 12$2.88, Aug 1 3:44 am$2.22, Jul 24 - Aug 8$6.23, Jul 13 - Aug 12$2.89, Aug 4 - Aug 12$2.22, Jul 24 - Aug 8$6.23, Jul 13 - Aug 12$2.89, Aug 4 - Aug 12$2.21, Aug 10 10:43 am$6.23, Jul 13 - Aug 12$2.89, Aug 4 - Aug 12$2.24, Aug 12 9:00 am$6.21, Aug 16 - Aug 19$2.96, Aug 16 2:51 am$2.17, Aug 16 2:51 am$6.21, Aug 16 - Aug 19$2.97, Aug 18 - Aug 23$2.16, Aug 18 12:30 am$6.21, Aug 16 - Aug 19$2.97, Aug 18 - Aug 23$2.15, Aug 19 10:31 pm$6.14, Aug 23 - Aug 31$2.97, Aug 18 - Aug 23$2.12, Aug 23 4:08 pm$6.14, Aug 23 - Aug 31$2.96, Aug 27 11:09 am$2.09, Aug 27 11:09 am$6.14, Aug 23 - Aug 31$2.95, Aug 31 3:58 am$2.06, Aug 31 3:58 am$6.07, Sep 2 - Sep 9$2.94, Sep 2 1:36 am$2.05, Sep 2 1:36 am$6.07, Sep 2 - Sep 9$2.93, Sep 5 - Sep 7$2.02, Sep 5 11:13 pm$6.07, Sep 2 - Sep 9$2.93, Sep 5 - Sep 7$2.01, Sep 7 11:09 pm$6.07, Sep 2 - Sep 9$2.92, Sep 9 11:08 pm$2.00, Sep 9 11:08 pm$6.07, Sep 2 - Sep 9$2.87, Sep 13 7:27 pm$1.76, Sep 13 7:27 pm$6.07, Sep 2 - Sep 9$2.96, Sep 17 - Sep 21$1.28, Sep 17 4:19 pm$6.07, Sep 2 - Sep 9$2.96, Sep 17 - Sep 21$0.07, Sep 21 2:01 pm$6.00, Sep 23 - Oct 11$4.99, Sep 23 2:14 pm$0.02, Sep 23 2:14 pm$6.00, Sep 23 - Oct 11$5.99, Sep 25 2:14 pm$0.01, Sep 25 2:14 pm$6.00, Sep 23 - Oct 11$3.28, Sep 29 12:14 pm$0.94, Sep 29 12:14 pm$6.00, Sep 23 - Oct 11$3.26, Oct 3 - Oct 7$0.93, Oct 3 1:50 pm$6.00, Sep 23 - Oct 11$3.28, Oct 5 3:41 pm$3.26, Oct 3 - Oct 7$6.00, Sep 23 - Oct 11$3.26, Oct 3 - Oct 7$2.00, Oct 7 - Oct 9$6.00, Sep 23 - Oct 11$3.23, Oct 9 8:26 pm$2.00, Oct 7 - Oct 9$6.00, Sep 23 - Oct 11$3.22, Oct 11 - Oct 13$1.99, Oct 11 10:34 pm$5.94, Oct 13 - Oct 21$3.22, Oct 11 - Oct 13$1.94, Oct 13 - Oct 15$5.94, Oct 13 - Oct 21$3.20, Oct 15 11:22 pm$1.94, Oct 13 - Oct 15$5.94, Oct 13 - Oct 21$3.19, Oct 17 - Oct 21$0.76, Oct 17 10:36 pm$5.94, Oct 13 - Oct 21$3.19, Oct 17 - Oct 21$0.75, Oct 19 9:59 pm$5.94, Oct 13 - Oct 21$3.19, Oct 17 - Oct 21$0.74, Oct 21 9:40 pm$5.88, Oct 23 - Nov 2$3.17, Oct 23 - Oct 27$0.67, Oct 25 7:40 pm$5.88, Oct 23 - Nov 2$3.17, Oct 23 - Oct 27$0.61, Oct 27 7:29 pm$5.88, Oct 23 - Nov 2$3.16, Oct 29 7:40 pm$0.54, Oct 29 7:40 pm$5.88, Oct 23 - Nov 2$3.15, Oct 31 - Nov 11$0.51, Oct 31 8:27 pm$5.88, Oct 23 - Nov 2$3.15, Oct 31 - Nov 11$0.49, Nov 2 8:32 pm$5.82, Nov 4 - Nov 13$3.15, Oct 31 - Nov 11$0.47, Nov 4 9:53 pm$5.82, Nov 4 - Nov 13$3.15, Oct 31 - Nov 11$0.46, Nov 7 12:12 am$5.82, Nov 4 - Nov 13$3.15, Oct 31 - Nov 11$0.44, Nov 9 - Nov 11$5.82, Nov 4 - Nov 13$2.23, Nov 13 6:41 am$0.41, Nov 13 6:41 am$5.76, Nov 15 - Nov 24$2.16, Nov 15 - Nov 24$0.38, Nov 15 9:14 am$5.76, Nov 15 - Nov 24$2.16, Nov 15 - Nov 24$0.27, Nov 17 1:44 pm$5.76, Nov 15 - Nov 24$2.16, Nov 15 - Nov 24$0.22, Nov 19 7:16 pm$5.76, Nov 15 - Nov 24$2.16, Nov 15 - Nov 24$0.15, Nov 22 12:42 am$5.76, Nov 15 - Nov 24$2.16, Nov 15 - Nov 24$0.12, Nov 24 6:46 am$5.77, Nov 28 - Dec 6$2.05, Nov 28 10:18 pm$0.07, Nov 28 10:18 pm$5.77, Nov 28 - Dec 6$1.95, Dec 1 9:36 am$0.02, Dec 1 9:36 am$5.77, Nov 28 - Dec 6$1.77, Dec 6 7:12 am$0.01, Dec 6 - Mar 28$5.78, Dec 11 9:40 am$1.70, Dec 11 9:40 am$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.40, Dec 16 - Dec 21$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.39, Dec 26 10:07 pm$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.40, Dec 31 - Jan 5$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.68, Jan 10 4:41 am$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.39, Jan 12 4:41 pm$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.31, Jan 17 4:27 pm$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.49, Jan 20 5:28 am$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.30, Jan 22 - Feb 4$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.40, Feb 9 - Feb 12$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.32, Feb 17 - Feb 20$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.68, Feb 23 5:39 am$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.32, Feb 26 - Feb 28$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.68, Mar 4 4:27 am$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.90, Mar 10 - Mar 22$0.01, Dec 6 - Mar 28$6.95, Dec 16 - Mar 28$2.33, Mar 28 1:17 am$0.01, Dec 6 - Mar 28 25,052580,697 625,000 468,750 312,500 156,250 Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr 2015 2016

Price Details

New

Latest $6.95 Mar 28, '16
Highest $6.95 Dec 16, '15
Lowest $4.39 Oct 9, '14
Average $6.95 (30d avg)
$6.95 (90d avg)
$6.48 (180d avg)
$6.55 (365d avg)
$6.20 (Lifetime average)
Added Feb 10, 2014

3rd Party New

Latest $2.33 Mar 28, '16
Highest $5.99 Sep 25, '15
Lowest $0.84 Sep 24, '14
Average $2.74 (30d avg)
$2.51 (90d avg)
$2.56 (180d avg)
$2.79 (365d avg)
$2.48 (Lifetime average)
Added Feb 10, 2014

3rd Party Used

Latest $0.01 Mar 28, '16
Highest $3.28 Oct 5, '15
Lowest $0.01 Dec 6, '15
Average $0.01 (30d avg)
$0.01 (90d avg)
$0.28 (180d avg)
$0.51 (365d avg)
$0.61 (Lifetime average)
Added Feb 10, 2014

Sales Rank

30 day average: 186,299
90 day average: 185,726

Product Description

- Clean new design for easy readability and comprehension

- Updated text presented in a lively, continuous narrative

- New center-spread sidebar feature presenting material in a fun, creative way

- Excellent age-appropriate introduction to curriculum-relevant subjects

- Important Words glossary clarifies subject-specific vocabulary

- Resources section encourages independent study

- Index makes navigating subject matter easy

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