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$26.95 $0.01
$37.50
$12.50
Dec
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Jun
Sep
Dec
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Mar
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2014
2015
2016
$19.30, Sep 10 4:38 pm $25.27, Nov 15 12:34 am $25.31, Nov 23 - Nov 29 $25.01, Dec 1 - Dec 4 $24.75, Dec 7 - Dec 9 $24.99, Dec 12 - Dec 21 $24.62, Dec 24 - Dec 26 $24.49, Dec 28 - Jan 4 $24.36, Jan 5 - Jan 10 $24.23, Jan 11 - Jan 15 $24.10, Jan 15 - Jan 22 $23.98, Jan 22 - Jan 27 $23.85, Jan 27 - Jan 31 $23.72, Feb 1 - Feb 5 $23.48, Feb 6 - Feb 10 $23.24, Feb 11 - Feb 15 $23.47, Feb 16 - Mar 2 $23.23, Mar 3 - Mar 7 $25.31, Mar 8 - Mar 14 $25.05, Mar 15 - Apr 20 $24.79, Apr 20 - Apr 24 $24.54, Apr 25 - Apr 29 $24.29, Apr 30 - May 3 $24.29, Apr 30 - May 3 $3.13, May 3 7:05 am $0.01, May 3 - Apr 25 $24.04, May 4 - May 8 $3.11, May 4 - May 5 $0.01, May 3 - Apr 25 $24.04, May 4 - May 8 $1.97, May 6 - May 15 $0.01, May 3 - Apr 25 $23.79, May 9 - May 12 $1.97, May 6 - May 15 $0.01, May 3 - Apr 25 $23.55, May 13 - May 18 $1.97, May 6 - May 15 $0.01, May 3 - Apr 25 $23.55, May 13 - May 18 $1.96, May 17 - May 28 $0.01, May 3 - Apr 25 $23.78, May 19 - Jun 14 $1.96, May 17 - May 28 $0.01, May 3 - Apr 25 $23.78, May 19 - Jun 14 $1.25, May 29 - Jun 1 $0.01, May 3 - Apr 25 $23.78, May 19 - Jun 14 $2.00, Jun 3 - Jun 7 $0.01, May 3 - Apr 25 $23.78, May 19 - Jun 14 $3.14, Jun 8 - Jun 9 $0.01, May 3 - Apr 25 $23.78, May 19 - Jun 14 $3.25, Jun 10 - Jun 17 $0.01, May 3 - Apr 25 $23.54, Jun 15 - Jun 21 $3.25, Jun 10 - Jun 17 $0.01, May 3 - Apr 25 $23.54, Jun 15 - Jun 21 $2.99, Jun 21 - Jun 24 $0.01, May 3 - Apr 25 $23.30, Jun 22 - Jun 28 $2.99, Jun 21 - Jun 24 $0.01, May 3 - Apr 25 $23.30, Jun 22 - Jun 28 $2.97, Jun 26 - Jun 27 $0.01, May 3 - Apr 25 $23.30, Jun 22 - Jun 28 $2.95, Jun 28 - Jul 3 $0.01, May 3 - Apr 25 $23.06, Jun 29 - Jul 2 $2.95, Jun 28 - Jul 3 $0.01, May 3 - Apr 25 $22.82, Jul 3 - Jul 6 $2.95, Jun 28 - Jul 3 $0.01, May 3 - Apr 25 $22.82, Jul 3 - Jul 6 $2.97, Jul 4 - Jul 6 $0.01, May 3 - Apr 25 $22.59, Jul 8 - Jul 11 $3.14, Jul 8 - Jul 13 $0.01, May 3 - Apr 25 $22.36, Jul 13 - Jul 16 $3.14, Jul 8 - Jul 13 $0.01, May 3 - Apr 25 $22.36, Jul 13 - Jul 16 $2.50, Jul 14 - Jul 17 $0.01, May 3 - Apr 25 $22.13, Jul 17 - Jul 26 $2.50, Jul 19 - Jul 26 $0.01, May 3 - Apr 25 $21.90, Jul 27 - Aug 2 $2.00, Jul 27 - Jul 29 $0.01, May 3 - Apr 25 $21.90, Jul 27 - Aug 2 $1.95, Jul 30 - Jul 31 $0.01, May 3 - Apr 25 $21.90, Jul 27 - Aug 2 $2.00, Aug 1 - Aug 2 $0.01, May 3 - Apr 25 $21.68, Aug 2 - Aug 7 $2.50, Aug 3 - Aug 4 $0.01, May 3 - Apr 25 $21.68, Aug 2 - Aug 7 $2.99, Aug 6 - Aug 8 $0.01, May 3 - Apr 25 $21.46, Aug 8 - Aug 11 $2.99, Aug 6 - Aug 8 $0.01, May 3 - Apr 25 $21.46, Aug 8 - Aug 11 $2.98, Aug 10 - Aug 14 $0.01, May 3 - Apr 25 $21.24, Aug 12 - Aug 22 $2.98, Aug 10 - Aug 14 $0.01, May 3 - Apr 25 $21.24, Aug 12 - Aug 22 $2.99, Aug 15 - Aug 24 $0.01, May 3 - Apr 25 $21.34, Aug 23 - Aug 29 $2.99, Aug 15 - Aug 24 $0.01, May 3 - Apr 25 $21.34, Aug 23 - Aug 29 $2.98, Aug 25 - Aug 26 $0.01, May 3 - Apr 25 $21.34, Aug 23 - Aug 29 $2.99, Aug 27 - Sep 15 $0.01, May 3 - Apr 25 $21.33, Aug 31 - Sep 5 $2.99, Aug 27 - Sep 15 $0.01, May 3 - Apr 25 $21.15, Sep 7 - Sep 13 $2.99, Aug 27 - Sep 15 $0.01, May 3 - Apr 25 $21.25, Sep 15 - Sep 22 $2.99, Sep 20 8:41 am $0.01, May 3 - Apr 25 $21.25, Sep 15 - Sep 22 $2.98, Sep 22 5:30 am $0.01, May 3 - Apr 25 $21.35, Sep 24 - Sep 29 $2.99, Sep 24 1:04 am $0.01, May 3 - Apr 25 $21.35, Sep 24 - Sep 29 $2.48, Sep 27 4:28 am $0.01, May 3 - Apr 25 $21.35, Sep 24 - Sep 29 $2.50, Sep 29 6:05 am $0.01, May 3 - Apr 25 $21.56, Oct 1 - Oct 6 $2.85, Oct 1 - Oct 2 $0.01, May 3 - Apr 25 $21.56, Oct 1 - Oct 6 $2.84, Oct 6 8:13 pm $0.01, May 3 - Apr 25 $21.34, Oct 8 - Oct 16 $2.83, Oct 8 10:34 pm $0.01, May 3 - Apr 25 $21.34, Oct 8 - Oct 16 $2.64, Oct 11 7:02 am $0.01, May 3 - Apr 25 $21.34, Oct 8 - Oct 16 $2.10, Oct 15 12:01 am $0.01, May 3 - Apr 25 $21.12, Oct 17 - Oct 22 $2.38, Oct 16 - Oct 17 $0.01, May 3 - Apr 25 $21.12, Oct 17 - Oct 22 $2.36, Oct 19 - Oct 20 $0.01, May 3 - Apr 25 $21.12, Oct 17 - Oct 22 $2.32, Oct 22 11:17 pm $0.01, May 3 - Apr 25 $20.90, Oct 27 - Nov 7 $0.01, May 3 - Apr 25 $0.01, Oct 27 - Nov 3 $20.90, Oct 27 - Nov 7 $1.98, Nov 7 2:57 pm $0.01, May 3 - Apr 25 $20.69, Nov 10 - Nov 13 $2.00, Nov 10 8:07 pm $0.01, May 3 - Apr 25 $20.69, Nov 10 - Nov 13 $1.98, Nov 13 9:18 pm $0.01, May 3 - Apr 25 $20.48, Nov 16 - Nov 21 $1.96, Nov 16 10:11 am $0.01, May 3 - Apr 25 $20.48, Nov 16 - Nov 21 $1.94, Nov 20 - Nov 21 $0.01, May 3 - Apr 25 $20.27, Nov 22 - Nov 29 $1.93, Nov 22 - Nov 23 $0.01, May 3 - Apr 25 $20.27, Nov 22 - Nov 29 $1.91, Nov 24 10:17 pm $0.01, May 3 - Apr 25 $20.27, Nov 22 - Nov 29 $1.87, Nov 26 - Nov 29 $0.01, May 3 - Apr 25 $20.06, Nov 30 - Dec 7 $1.86, Nov 30 12:32 am $0.01, May 3 - Apr 25 $20.06, Nov 30 - Dec 7 $1.83, Dec 3 - Dec 4 $0.01, May 3 - Apr 25 $20.06, Nov 30 - Dec 7 $1.81, Dec 5 - Dec 6 $0.01, May 3 - Apr 25 $20.06, Nov 30 - Dec 7 $1.80, Dec 7 2:12 am $0.01, May 3 - Apr 25 $20.26, Dec 9 - Dec 13 $1.75, Dec 9 3:36 am $0.01, May 3 - Apr 25 $20.26, Dec 9 - Dec 13 $1.74, Dec 11 7:16 am $0.01, May 3 - Apr 25 $20.46, Dec 15 - Dec 17 $1.71, Dec 15 5:12 am $0.01, May 3 - Apr 25 $20.46, Dec 15 - Dec 17 $1.70, Dec 17 4:38 am $0.01, May 3 - Apr 25 $20.66, Dec 21 11:50 pm $1.68, Dec 21 11:50 pm $0.01, May 3 - Apr 25 $20.33, Jan 11 - Jan 18 $2.84, Jan 11 - Jan 16 $0.01, May 3 - Apr 25 $20.33, Jan 11 - Jan 18 $2.85, Jan 18 12:25 pm $0.01, May 3 - Apr 25 $20.22, Jan 19 - Jan 26 $2.98, Jan 19 - Jan 21 $0.01, May 3 - Apr 25 $20.22, Jan 19 - Jan 26 $2.75, Jan 21 - Jan 25 $0.01, May 3 - Apr 25 $20.22, Jan 19 - Jan 26 $2.74, Jan 26 - Jan 27 $0.01, May 3 - Apr 25 $20.11, Jan 26 - Feb 1 $2.75, Jan 28 - Feb 3 $0.01, May 3 - Apr 25 $19.90, Feb 2 - Feb 9 $2.75, Jan 28 - Feb 3 $0.01, May 3 - Apr 25 $19.90, Feb 2 - Feb 9 $3.00, Feb 4 2:55 am $0.01, May 3 - Apr 25 $19.90, Feb 2 - Feb 9 $3.23, Feb 5 8:30 pm $0.01, May 3 - Apr 25 $19.90, Feb 2 - Feb 9 $3.97, Feb 7 - Feb 28 $0.01, May 3 - Apr 25 $19.70, Feb 10 - Feb 16 $3.97, Feb 7 - Feb 28 $0.01, May 3 - Apr 25 $19.50, Feb 17 - Feb 22 $3.97, Feb 7 - Feb 28 $0.01, May 3 - Apr 25 $19.30, Feb 24 - Feb 28 $3.97, Feb 7 - Feb 28 $0.01, May 3 - Apr 25 $19.10, Mar 3 - Mar 31 $3.50, Mar 3 - Mar 12 $0.01, May 3 - Apr 25 $19.10, Mar 3 - Mar 31 $3.01, Mar 15 - Mar 29 $0.01, May 3 - Apr 25 $19.10, Mar 3 - Mar 31 $2.89, Mar 31 - Apr 7 $0.01, May 3 - Apr 25 $18.90, Apr 3 - Apr 7 $2.89, Mar 31 - Apr 7 $0.01, May 3 - Apr 25 $18.71, Apr 10 - Apr 14 $2.86, Apr 10 - Apr 14 $0.01, May 3 - Apr 25 $18.52, Apr 17 - Apr 21 $2.85, Apr 17 - Apr 18 $0.01, May 3 - Apr 25 $18.52, Apr 17 - Apr 21 $2.99, Apr 21 2:54 am $0.01, May 3 - Apr 25 $18.70, Apr 22 - Apr 25 $2.99, Apr 23 9:28 pm $0.01, May 3 - Apr 25 $18.70, Apr 26 - Apr 28 $2.90, Apr 26 11:51 pm $0.01, Apr 26 - Apr 1 $18.70, Apr 26 - Apr 28 $2.85, Apr 28 12:31 pm $0.01, Apr 26 - Apr 1 $18.88, May 1 - May 5 $2.83, May 1 7:05 am $0.01, Apr 26 - Apr 1 $18.88, May 1 - May 5 $2.85, May 2 - May 5 $0.01, Apr 26 - Apr 1 $19.06, May 6 - May 10 $3.00, May 6 - May 26 $0.01, Apr 26 - Apr 1 $19.25, May 14 - May 17 $3.00, May 6 - May 26 $0.01, Apr 26 - Apr 1 $19.05, May 20 - May 26 $3.00, May 6 - May 26 $0.01, Apr 26 - Apr 1 $19.23, May 31 - Jun 2 $3.01, May 31 - Jun 4 $0.01, Apr 26 - Apr 1 $19.03, Jun 4 - Jun 9 $3.01, May 31 - Jun 4 $0.01, Apr 26 - Apr 1 $19.03, Jun 4 - Jun 9 $3.50, Jun 7 - Jun 19 $0.01, Apr 26 - Apr 1 $18.84, Jun 11 - Jun 17 $3.50, Jun 7 - Jun 19 $0.01, Apr 26 - Apr 1 $18.65, Jun 19 - Jun 24 $3.50, Jun 7 - Jun 19 $0.01, Apr 26 - Apr 1 $18.65, Jun 19 - Jun 24 $3.73, Jun 20 11:13 pm $0.01, Apr 26 - Apr 1 $18.65, Jun 19 - Jun 24 $3.98, Jun 24 - Jun 26 $0.01, Apr 26 - Apr 1 $18.46, Jun 26 - Jul 2 $3.98, Jun 24 - Jun 26 $0.01, Apr 26 - Apr 1 $18.46, Jun 26 - Jul 2 $3.97, Jun 28 - Jul 7 $0.01, Apr 26 - Apr 1 $18.64, Jul 5 - Jul 10 $3.97, Jun 28 - Jul 7 $0.01, Apr 26 - Apr 1 $18.64, Jul 5 - Jul 10 $3.50, Jul 10 - Jul 22 $0.01, Apr 26 - Apr 1 $18.82, Jul 12 - Jul 16 $3.50, Jul 10 - Jul 22 $0.01, Apr 26 - Apr 1 $19.00, Jul 18 - Jul 22 $3.50, Jul 10 - Jul 22 $0.01, Apr 26 - Apr 1 $18.81, Jul 25 - Aug 2 $3.37, Jul 25 8:22 pm $0.01, Apr 26 - Apr 1 $18.81, Jul 25 - Aug 2 $2.99, Jul 29 11:24 am $0.01, Apr 26 - Apr 1 $18.81, Jul 25 - Aug 2 $2.89, Aug 2 1:29 am $0.01, Apr 26 - Apr 1 $18.24, Aug 5 - Aug 7 $2.99, Aug 5 - Aug 22 $0.01, Apr 26 - Apr 1 $17.69, Aug 9 - Aug 15 $2.99, Aug 5 - Aug 22 $0.01, Apr 26 - Apr 1 $17.15, Aug 17 - Aug 22 $2.99, Aug 5 - Aug 22 $0.01, Apr 26 - Apr 1 $16.63, Aug 24 - Aug 28 $3.00, Aug 24 7:12 pm $0.01, Apr 26 - Apr 1 $16.63, Aug 24 - Aug 28 $2.75, Aug 26 5:27 pm $0.01, Apr 26 - Apr 1 $16.13, Aug 30 - Sep 5 $2.70, Aug 28 - Sep 3 $0.01, Apr 26 - Apr 1 $16.13, Aug 30 - Sep 5 $2.00, Sep 5 - Sep 22 $0.01, Apr 26 - Apr 1 $15.64, Sep 9 - Sep 11 $2.00, Sep 5 - Sep 22 $0.01, Apr 26 - Apr 1 $15.60, Sep 15 - Sep 26 $2.00, Sep 5 - Sep 22 $0.01, Apr 26 - Apr 1 $15.60, Sep 15 - Sep 26 $1.98, Sep 24 - Sep 26 $0.01, Apr 26 - Apr 1 $16.11, Sep 28 - Oct 3 $1.00, Sep 28 - Oct 31 $0.01, Apr 26 - Apr 1 $16.46, Oct 7 - Oct 23 $1.00, Sep 28 - Oct 31 $0.01, Apr 26 - Apr 1 OOS $16.46, Oct 27 - Oct 31 $1.00, Sep 28 - Oct 31 $0.01, Apr 26 - Apr 1 $16.62, Nov 4 - Nov 10 $2.75, Nov 4 - Nov 18 $0.01, Apr 26 - Apr 1 $16.78, Nov 12 - Nov 16 $2.75, Nov 4 - Nov 18 $0.01, Apr 26 - Apr 1 $17.43, Nov 18 - Nov 23 $2.75, Nov 4 - Nov 18 $0.01, Apr 26 - Apr 1 $17.43, Nov 18 - Nov 23 $2.65, Nov 21 - Nov 27 $0.01, Apr 26 - Apr 1 $17.60, Nov 27 11:17 pm $2.65, Nov 21 - Nov 27 $0.01, Apr 26 - Apr 1 $17.77, Nov 30 - Dec 20 $2.75, Nov 30 9:01 am $0.01, Apr 26 - Apr 1 $17.77, Nov 30 - Dec 20 $2.65, Dec 5 - Dec 7 $0.01, Apr 26 - Apr 1 $17.77, Nov 30 - Dec 20 $2.75, Dec 12 - Dec 30 $0.01, Apr 26 - Apr 1 $17.51, Dec 22 - Dec 28 $2.75, Dec 12 - Dec 30 $0.01, Apr 26 - Apr 1 $17.42, Dec 30 - Jan 4 $2.75, Dec 12 - Dec 30 $0.01, Apr 26 - Apr 1 $17.42, Dec 30 - Jan 4 $2.34, Jan 2 3:10 am $0.01, Apr 26 - Apr 1 $17.42, Dec 30 - Jan 4 $2.15, Jan 4 12:59 pm $0.01, Apr 26 - Apr 1 $16.55, Jan 5 - Jan 11 $2.00, Jan 7 3:48 am $0.01, Apr 26 - Apr 1 $16.55, Jan 5 - Jan 11 $2.04, Jan 8 - Jan 9 $0.01, Apr 26 - Apr 1 $15.76, Jan 12 - Feb 18 $2.00, Jan 11 - Jan 12 $0.01, Apr 26 - Apr 1 $15.76, Jan 12 - Feb 18 $1.95, Jan 13 - Jan 15 $0.01, Apr 26 - Apr 1 $15.76, Jan 12 - Feb 18 $1.94, Jan 16 2:48 pm $0.01, Apr 26 - Apr 1 $15.76, Jan 12 - Feb 18 $1.88, Jan 19 8:12 am $0.01, Apr 26 - Apr 1 $15.76, Jan 12 - Feb 18 $1.84, Jan 22 2:56 am $0.01, Apr 26 - Apr 1 $15.76, Jan 12 - Feb 18 $1.79, Jan 24 7:21 pm $0.01, Apr 26 - Apr 1 $15.76, Jan 12 - Feb 18 $1.95, Jan 26 - Mar 23 $0.01, Apr 26 - Apr 1 $26.95, Feb 20 - Feb 29 $1.95, Jan 26 - Mar 23 $0.01, Apr 26 - Apr 1 OOS $26.95, Mar 4 10:21 pm $1.95, Jan 26 - Mar 23 $0.01, Apr 26 - Apr 1 $26.95, Mar 11 7:19 am $1.95, Jan 26 - Mar 23 $0.01, Apr 26 - Apr 1 $25.60, Mar 14 1:36 pm $1.95, Jan 26 - Mar 23 $0.01, Apr 26 - Apr 1 $24.31, Mar 20 - Mar 23 $1.95, Jan 26 - Mar 23 $0.01, Apr 26 - Apr 1 $23.09, Mar 26 - Mar 29 $1.93, Mar 26 2:43 pm $0.01, Apr 26 - Apr 1 $23.09, Mar 26 - Mar 29 $1.90, Mar 29 - Apr 1 $0.01, Apr 26 - Apr 1 $21.93, Apr 1 3:09 pm $1.90, Mar 29 - Apr 1 $0.01, Apr 26 - Apr 1
7,857 714,983
781,250
625,000
468,750
312,500
156,250
Oct
Dec
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Apr
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2015
2016
Price Details
New
Latest
$21.93 Apr 1, '16
Highest
$26.95 Mar 11, '16
Lowest
$15.60 Sep 15, '15
Average
$25.23 (30d avg) $20.42 (90d avg) $18.78 (180d avg) $18.40 (365d avg) $20.59 (Lifetime average)
Added
Sep 10, 2013
3rd Party New
Latest
$1.90 Apr 1, '16
Highest
$3.99 Jun 22, '15
Lowest
$0.01 Oct 27, '14
Average
$1.94 (30d avg) $1.95 (90d avg) $2.05 (180d avg) $2.51 (365d avg) $2.53 (Lifetime average)
Added
Sep 10, 2013
3rd Party Used
Latest
$0.01 Apr 1, '16
Highest
$0.01 Apr 26, '15
Lowest
$0.01 Apr 26, '15
Average
$0.01 (30d avg) $0.01 (90d avg) $0.01 (180d avg) $0.01 (365d avg) $0.01 (Lifetime average)
Added
Sep 10, 2013
Sales Rank
30 day average: 190,319 90 day average: 207,886
Product Description
Discover how a carefully structured combination of two approaches--sustained silent reading and instruction in subject-specific vocabulary--can help rescue low achievers and boost the academic performance of all students.
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