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$20.56, Sep 26 - Dec 5 $20.76, Dec 8 - Dec 27 $20.65, Dec 29 - Jan 17 $20.54, Jan 18 - Feb 7 $20.33, Feb 8 - May 3 $21.05, May 3 - Jul 21 $19.63, May 3 - May 11 $14.99, May 3 - Jul 1 $21.05, May 3 - Jul 21 $14.99, May 3 - Jul 1 $14.98, May 12 - May 29 $21.05, May 3 - Jul 21 $19.63, May 30 - Aug 22 $14.99, May 3 - Jul 1 $21.05, May 3 - Jul 21 $19.63, May 30 - Aug 22 $15.50, Jul 10 10:56 pm $21.05, May 3 - Jul 21 $19.63, May 30 - Aug 22 $15.49, Jul 12 - Jul 25 $20.74, Jul 22 - Jul 30 $19.63, May 30 - Aug 22 $15.49, Jul 27 - Aug 11 $20.94, Jul 31 - Aug 12 $19.63, May 30 - Aug 22 $15.49, Jul 27 - Aug 11 $21.06, Aug 13 - Oct 6 $19.63, May 30 - Aug 22 $15.25, Aug 13 - Aug 17 $21.06, Aug 13 - Oct 6 $19.63, May 30 - Aug 22 $16.68, Aug 21 8:49 am $21.06, Aug 13 - Oct 6 $20.64, Aug 23 - Sep 8 $16.64, Aug 23 - Aug 24 $21.06, Aug 13 - Oct 6 $20.64, Aug 23 - Sep 8 $16.62, Aug 25 - Sep 3 $21.06, Aug 13 - Oct 6 $20.64, Aug 23 - Sep 8 $16.59, Sep 4 - Sep 5 $21.06, Aug 13 - Oct 6 $20.64, Aug 23 - Sep 8 $16.56, Sep 7 - Sep 8 $21.06, Aug 13 - Oct 6 $20.63, Sep 9 11:36 am $16.53, Sep 9 11:36 am $21.06, Aug 13 - Oct 6 $20.61, Sep 11 9:15 pm $16.53, Sep 11 9:15 pm $21.06, Aug 13 - Oct 6 $20.60, Sep 13 1:18 am $16.50, Sep 13 1:18 am $21.06, Aug 13 - Oct 6 $20.59, Sep 15 12:32 am $16.46, Sep 15 12:32 am $21.06, Aug 13 - Oct 6 $20.58, Sep 19 1:57 am $16.53, Sep 19 1:57 am $21.06, Aug 13 - Oct 6 $20.57, Sep 22 - Sep 23 $16.56, Sep 22 12:38 am $21.06, Aug 13 - Oct 6 $20.76, Sep 23 8:22 pm $20.57, Sep 22 - Sep 23 $21.96, Sep 26 10:13 pm $21.06, Aug 13 - Oct 6 $20.75, Sep 25 - Sep 30 $21.06, Aug 13 - Oct 6 $20.75, Sep 25 - Sep 30 $20.62, Sep 29 1:58 am $21.06, Aug 13 - Oct 6 $20.75, Sep 25 - Sep 30 $20.23, Sep 30 3:11 am $21.06, Oct 2 6:14 am $21.06, Aug 13 - Oct 6 $19.41, Oct 2 6:14 am $21.06, Aug 13 - Oct 6 $21.05, Oct 6 12:16 pm $19.39, Oct 4 - Oct 12 $19.98, Oct 8 - Oct 12 $19.98, Oct 8 - Oct 12 $19.39, Oct 4 - Oct 12 $21.06, Oct 15 - Dec 25 $20.43, Oct 15 1:51 am $20.43, Oct 15 1:51 am $21.06, Oct 15 - Dec 25 $19.70, Oct 18 - Oct 20 $19.70, Oct 18 - Oct 20 $21.06, Oct 15 - Dec 25 $19.56, Oct 22 11:13 pm $19.56, Oct 22 - Nov 1 $21.06, Oct 15 - Dec 25 $19.56, Oct 22 - Nov 1 $11.58, Oct 27 7:20 pm $21.06, Oct 15 - Dec 25 $19.56, Oct 22 - Nov 1 $11.55, Nov 1 10:28 pm $21.06, Oct 15 - Dec 25 $19.59, Nov 9 - Dec 2 $12.77, Nov 9 3:15 am $21.06, Oct 15 - Dec 25 $19.59, Nov 9 - Dec 2 $12.49, Nov 14 9:10 am $21.06, Oct 15 - Dec 25 $19.59, Nov 9 - Dec 2 $12.31, Nov 18 12:00 am $21.06, Oct 15 - Dec 25 $19.59, Nov 9 - Dec 2 $12.19, Nov 20 9:10 am $21.06, Oct 15 - Dec 25 $19.59, Nov 9 - Dec 2 $12.07, Nov 22 12:01 pm $21.06, Oct 15 - Dec 25 $19.59, Nov 9 - Dec 2 $11.99, Nov 24 12:54 pm $21.06, Oct 15 - Dec 25 $19.59, Nov 9 - Dec 2 $11.77, Nov 28 9:55 am $21.06, Oct 15 - Dec 25 $19.59, Nov 9 - Dec 2 $11.67, Nov 30 8:28 am $21.06, Oct 15 - Dec 25 $19.59, Nov 9 - Dec 2 $11.57, Dec 2 7:02 am $21.06, Oct 15 - Dec 25 $15.00, Dec 4 - Dec 23 $11.47, Dec 4 6:00 am $21.06, Oct 15 - Dec 25 $15.00, Dec 4 - Dec 23 $11.25, Dec 8 2:26 am $21.06, Oct 15 - Dec 25 $15.00, Dec 4 - Dec 23 $11.09, Dec 10 8:51 am $21.06, Oct 15 - Dec 25 $15.00, Dec 4 - Dec 23 $10.94, Dec 12 6:46 am $21.06, Oct 15 - Dec 25 $15.00, Dec 4 - Dec 23 $10.73, Dec 15 5:35 am $21.06, Oct 15 - Dec 25 $15.00, Dec 4 - Dec 23 $10.58, Dec 17 5:01 am $21.06, Oct 15 - Dec 25 $15.00, Dec 4 - Dec 23 $10.19, Dec 22 12:05 am $21.06, Oct 15 - Dec 25 $19.59, Dec 24 - Jan 1 $9.95, Dec 25 3:01 am $20.95, Dec 26 - Jan 11 $19.59, Dec 24 - Jan 1 $9.74, Dec 27 10:56 am $20.95, Dec 26 - Jan 11 $19.59, Dec 24 - Jan 1 $9.62, Dec 29 2:29 am $20.95, Dec 26 - Jan 11 $19.59, Dec 24 - Jan 1 $9.35, Jan 1 9:03 am $20.95, Dec 26 - Jan 11 $15.00, Jan 10 - Mar 30 $13.89, Jan 10 - Jan 21 $20.84, Jan 12 - Jan 19 $15.00, Jan 10 - Mar 30 $13.89, Jan 10 - Jan 21 $20.73, Jan 21 - Jan 28 $16.58, Jan 22 7:30 pm $15.00, Jan 10 - Mar 30 $20.73, Jan 21 - Jan 28 $15.00, Jan 10 - Mar 30 $12.46, Jan 24 10:11 am $20.73, Jan 21 - Jan 28 $15.00, Jan 10 - Mar 30 $11.92, Jan 27 12:40 am $20.73, Jan 21 - Jan 28 $15.00, Jan 10 - Mar 30 $11.59, Jan 28 5:21 pm $20.62, Jan 30 - Feb 9 $15.00, Jan 10 - Mar 30 $10.93, Feb 1 6:14 am $20.62, Jan 30 - Feb 9 $15.00, Jan 10 - Mar 30 $10.51, Feb 3 2:47 am $20.62, Jan 30 - Feb 9 $15.00, Jan 10 - Mar 30 $9.63, Feb 6 2:31 pm $20.62, Jan 30 - Feb 9 $15.00, Jan 10 - Mar 30 $9.44, Feb 7 12:31 pm $21.06, Feb 11 - Mar 13 $15.00, Jan 10 - Mar 30 $8.38, Feb 11 3:33 am $21.06, Feb 11 - Mar 13 $15.00, Jan 10 - Mar 30 $7.87, Feb 13 12:27 am $21.06, Feb 11 - Mar 13 $15.00, Jan 10 - Mar 30 $7.38, Feb 14 8:20 pm $21.06, Feb 11 - Mar 13 $15.00, Jan 10 - Mar 30 $13.16, Feb 17 6:52 pm $21.06, Feb 11 - Mar 13 $15.00, Jan 10 - Mar 30 $13.18, Feb 19 4:39 pm $21.06, Feb 11 - Mar 13 $16.84, Feb 21 - Mar 13 $15.00, Jan 10 - Mar 30 $22.47, Mar 15 - Mar 21 $17.97, Mar 15 - Mar 21 $15.00, Jan 10 - Mar 30 $24.09, Mar 23 - Mar 30 $18.97, Mar 23 - Mar 30 $15.00, Jan 10 - Mar 30 $22.47, Apr 2 8:32 am $19.59, Apr 2 - Apr 10 $13.97, Apr 2 8:32 am $21.06, Apr 4 - Apr 21 $19.59, Apr 2 - Apr 10 $12.84, Apr 4 - Apr 7 $21.06, Apr 4 - Apr 21 $19.59, Apr 2 - Apr 10 $19.56, Apr 10 7:14 am $21.06, Apr 4 - Apr 21 $19.62, Apr 13 3:48 am $12.84, Apr 13 3:48 am $21.66, Apr 15 - Apr 21 $21.06, Apr 4 - Apr 21 $19.59, Apr 15 11:52 pm $21.66, Apr 15 - Apr 21 $21.06, Apr 4 - Apr 21 $19.64, Apr 18 - Apr 21 $54.95, Apr 24 12:21 am $22.47, Apr 24 12:21 am $19.64, Apr 18 - Apr 21 $54.90, Apr 25 11:23 am $23.76, Apr 25 11:23 am $19.64, Apr 18 - Apr 21 $56.98, Apr 28 11:43 am OOS $23.76, Apr 28 11:43 am $19.64, Apr 18 - Apr 21 $23.76, May 1 6:22 am $19.64, Apr 18 - Apr 21 $19.00, May 1 6:22 am $26.44, May 3 10:48 pm $21.61, May 3 10:48 pm $21.15, May 3 10:48 pm $21.06, May 6 - May 17 $20.55, May 6 4:37 pm $16.00, May 6 - May 12 $21.06, May 6 - May 17 $20.53, May 10 7:00 pm $16.00, May 6 - May 12 $21.06, May 6 - May 17 $20.52, May 12 10:20 am $16.00, May 6 - May 12 $21.40, May 15 7:14 pm $21.06, May 6 - May 17 $20.48, May 15 7:14 pm $21.10, May 17 - Jun 16 $21.06, May 6 - May 17 $20.47, May 17 5:33 pm $21.10, May 17 - Jun 16 OOS $21.06, May 19 9:45 pm $20.46, May 19 9:45 pm $21.10, May 17 - Jun 16 $21.06, May 24 - Jul 2 $20.43, May 24 - May 26 $21.10, May 17 - Jun 16 $21.06, May 24 - Jul 2 $20.41, May 30 4:19 pm $21.10, May 17 - Jun 16 $21.06, May 24 - Jul 2 $20.39, Jun 4 - Jun 6 $21.10, May 17 - Jun 16 $21.06, May 24 - Jul 2 $19.98, Jun 8 9:23 pm $21.10, May 17 - Jun 16 $21.06, May 24 - Jul 2 $19.96, Jun 12 - Jun 16 $21.48, Jun 18 11:47 am $21.06, May 24 - Jul 2 $19.95, Jun 18 11:47 am $21.10, Jun 22 5:38 am $21.06, May 24 - Jul 2 $19.94, Jun 22 - Jun 30 $21.48, Jun 26 1:18 am $21.06, May 24 - Jul 2 $19.94, Jun 22 - Jun 30 $21.06, May 24 - Jul 2 $19.99, Jun 30 - Jul 21 $19.94, Jun 22 - Jun 30 $21.06, May 24 - Jul 2 $19.99, Jun 30 - Jul 21 $19.93, Jul 2 4:54 am OOS $21.06, Jul 4 - Aug 4 $19.99, Jun 30 - Jul 21 $19.91, Jul 4 8:24 am OOS $21.06, Jul 4 - Aug 4 $19.99, Jun 30 - Jul 21 $19.90, Jul 9 - Jul 17 OOS $21.06, Jul 4 - Aug 4 $19.99, Jun 30 - Jul 21 $19.88, Jul 21 8:49 am OOS $21.06, Jul 4 - Aug 4 $19.89, Jul 24 10:57 pm $19.85, Jul 24 - Jul 28 OOS $21.06, Jul 4 - Aug 4 $19.88, Jul 28 12:06 pm $19.85, Jul 24 - Jul 28 OOS $21.06, Jul 4 - Aug 4 $19.89, Aug 1 2:13 am $16.90, Aug 1 2:13 am OOS $21.06, Jul 4 - Aug 4 $19.88, Aug 4 - Aug 8 $16.97, Aug 4 - Sep 13 $20.95, Aug 8 9:43 am $19.88, Aug 4 - Aug 8 $16.97, Aug 4 - Sep 13 OOS $20.95, Aug 12 4:50 am $19.87, Aug 12 4:50 am $16.97, Aug 4 - Sep 13 OOS $20.84, Aug 15 - Aug 25 $19.88, Aug 15 - Aug 21 $16.97, Aug 4 - Sep 13 OOS $20.84, Aug 15 - Aug 25 $19.89, Aug 25 8:41 am $16.97, Aug 4 - Sep 13 $20.84, Aug 29 - Sep 1 $19.88, Aug 29 3:13 am $16.97, Aug 4 - Sep 13 $20.84, Aug 29 - Sep 1 $19.87, Sep 1 8:02 pm $16.97, Aug 4 - Sep 13 $20.73, Sep 5 - Sep 21 $19.86, Sep 5 5:28 pm $16.97, Aug 4 - Sep 13 $20.73, Sep 5 - Sep 21 $19.83, Sep 9 - Sep 13 $16.97, Aug 4 - Sep 13 $20.73, Sep 5 - Sep 21 $19.85, Sep 17 - Sep 21 $16.96, Sep 17 9:34 am $20.73, Sep 5 - Sep 21 $19.85, Sep 17 - Sep 21 $16.73, Sep 21 7:00 am $20.62, Sep 25 - Oct 15 $19.84, Sep 25 5:26 am $16.71, Sep 25 5:26 am $20.62, Sep 25 - Oct 15 $19.81, Sep 29 3:17 am $16.62, Sep 29 - Oct 3 $20.62, Sep 25 - Oct 15 $19.54, Oct 3 4:50 am $16.62, Sep 29 - Oct 3 $20.62, Sep 25 - Oct 15 $19.79, Oct 7 7:21 am $16.51, Oct 7 7:21 am $20.62, Sep 25 - Oct 15 $18.52, Oct 11 10:26 am $16.22, Oct 11 10:26 am $20.62, Sep 25 - Oct 15 $18.51, Oct 15 - Nov 12 $16.02, Oct 15 9:08 am $20.51, Oct 19 5:23 am $18.51, Oct 15 - Nov 12 $15.49, Oct 19 5:23 am $21.06, Oct 23 - Nov 8 $18.51, Oct 15 - Nov 12 $15.15, Oct 23 3:08 am $21.06, Oct 23 - Nov 8 $18.51, Oct 15 - Nov 12 $14.87, Oct 27 12:38 am $21.06, Oct 23 - Nov 8 $18.51, Oct 15 - Nov 12 $14.53, Oct 31 12:05 am $21.06, Oct 23 - Nov 8 $18.51, Oct 15 - Nov 12 $14.20, Nov 4 12:18 am $21.06, Oct 23 - Nov 8 $18.51, Oct 15 - Nov 12 $13.91, Nov 8 3:11 am $20.95, Nov 12 - Nov 25 $18.51, Oct 15 - Nov 12 $11.78, Nov 12 5:50 am $20.95, Nov 12 - Nov 25 $18.60, Nov 16 11:40 am $11.27, Nov 16 11:40 am $20.95, Nov 12 - Nov 25 $18.59, Nov 20 - Nov 25 $9.23, Nov 20 9:07 pm $20.95, Nov 12 - Nov 25 $18.59, Nov 20 - Nov 25 $5.20, Nov 25 7:14 am $20.84, Nov 30 - Jan 3 $18.43, Nov 30 - Jan 3 $2.77, Nov 30 12:06 am $20.84, Nov 30 - Jan 3 $18.43, Nov 30 - Jan 3 $1.57, Dec 4 9:38 pm $20.84, Nov 30 - Jan 3 $18.43, Nov 30 - Jan 3 $1.21, Dec 10 - Jan 3 $20.73, Jan 8 - Jan 18 $18.54, Jan 8 3:30 pm $1.87, Jan 8 3:30 pm $20.73, Jan 8 - Jan 18 $18.53, Jan 13 - Mar 31 $3.78, Jan 13 12:52 pm $20.73, Jan 8 - Jan 18 $18.53, Jan 13 - Mar 31 $11.48, Jan 18 1:23 pm $20.62, Jan 21 - Feb 5 $18.53, Jan 13 - Mar 31 $11.44, Jan 21 2:24 am $20.62, Jan 21 - Feb 5 $18.53, Jan 13 - Mar 31 $11.37, Jan 26 3:37 am $20.62, Jan 21 - Feb 5 $18.53, Jan 13 - Mar 31 $11.09, Jan 31 2:24 am $20.62, Jan 21 - Feb 5 $18.53, Jan 13 - Mar 31 $10.90, Feb 5 5:48 am $20.51, Feb 10 - Mar 31 $18.53, Jan 13 - Mar 31 $10.77, Feb 10 7:19 am $20.51, Feb 10 - Mar 31 $18.53, Jan 13 - Mar 31 $9.29, Feb 15 4:02 pm $20.51, Feb 10 - Mar 31 $18.53, Jan 13 - Mar 31 $8.80, Feb 21 1:04 am $20.51, Feb 10 - Mar 31 $18.53, Jan 13 - Mar 31 $8.25, Feb 26 12:00 pm $20.51, Feb 10 - Mar 31 $18.53, Jan 13 - Mar 31 $16.51, Mar 8 11:53 am $20.51, Feb 10 - Mar 31 $18.53, Jan 13 - Mar 31 $14.98, Mar 20 - Mar 31
94,163 1,033,380
1,171,875
781,250
390,625
0
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Price Details
New
Last Seen
$20.51 Mar 31, '16
Highest
$26.44 May 3, '15
Lowest
$19.98 Oct 8, '14
Average
$20.51 (30d avg) $20.59 (90d avg) $20.72 (180d avg) $20.97 (365d avg) $20.91 (Lifetime average)
Added
Sep 26, 2013
3rd Party New
Last Seen
$18.53 Mar 31, '16
Highest
$21.61 May 3, '15
Lowest
$14.98 May 12, '14
Average
$18.53 (30d avg) $18.52 (90d avg) $18.54 (180d avg) $19.27 (365d avg) $18.72 (Lifetime average)
Added
Sep 26, 2013
3rd Party Used
Last Seen
$14.98 Mar 31, '16
Highest
$56.98 Apr 28, '15
Lowest
$1.21 Dec 10, '15
Average
$15.75 (30d avg) $9.99 (90d avg) $9.42 (180d avg) $14.89 (365d avg) $14.82 (Lifetime average)
Added
Sep 26, 2013
Sales Rank
30 day average: 932,900 90 day average: 720,351
Product Description
This concisely written book explains why it is important to define high-quality requirements and gives you tools and techniques for developing and managing requirements.
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