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2015
2016
$11.69, May 16 - Dec 17 $7.83, May 16 - May 19 $7.69, May 16 12:19 pm $11.69, May 16 - Dec 17 $7.83, May 16 - May 19 $7.65, May 19 3:17 am $11.69, May 16 - Dec 17 $7.80, May 19 - Jul 14 $7.69, May 19 - May 27 $11.69, May 16 - Dec 17 $7.80, May 19 - Jul 14 $7.67, May 28 12:43 am $11.69, May 16 - Dec 17 $7.80, May 19 - Jul 14 $7.69, May 29 - Jun 2 $11.69, May 16 - Dec 17 $7.80, May 19 - Jul 14 $7.68, Jun 2 - Jun 4 $11.69, May 16 - Dec 17 $7.80, May 19 - Jul 14 $7.67, Jun 5 - Jun 8 $11.69, May 16 - Dec 17 $7.80, May 19 - Jul 14 $7.66, Jun 8 - Jun 10 $11.69, May 16 - Dec 17 $7.80, May 19 - Jul 14 $7.65, Jun 11 1:40 am $11.69, May 16 - Dec 17 $7.80, May 19 - Jul 14 $7.69, Jun 11 - Jul 17 $11.69, May 16 - Dec 17 $7.70, Jul 15 - Jul 17 $7.69, Jun 11 - Jul 17 $11.69, May 16 - Dec 17 $7.68, Jul 18 12:42 pm $7.67, Jul 18 12:42 pm $11.69, May 16 - Dec 17 $7.65, Jul 20 5:36 pm $7.65, Jul 20 - Jul 21 $11.69, May 16 - Dec 17 $7.65, Jul 20 - Jul 21 $7.64, Jul 21 3:11 pm $11.69, May 16 - Dec 17 $7.64, Jul 23 12:46 am $7.63, Jul 23 12:46 am $11.69, May 16 - Dec 17 $7.62, Jul 24 - Jul 25 $7.62, Jul 25 - Jul 26 $11.69, May 16 - Dec 17 $7.61, Jul 27 10:56 am $7.60, Jul 27 - Jul 28 $11.69, May 16 - Dec 17 $7.60, Jul 28 - Jul 29 $7.59, Jul 29 6:56 am $11.69, May 16 - Dec 17 $7.80, Jul 31 - Aug 13 $7.57, Jul 31 2:05 am $11.69, May 16 - Dec 17 $7.80, Jul 31 - Aug 13 $7.69, Jul 31 - Aug 13 $11.69, May 16 - Dec 17 $7.68, Aug 14 4:22 am $7.68, Aug 14 4:22 am $11.69, May 16 - Dec 17 $7.63, Aug 16 2:34 am $7.63, Aug 16 2:34 am $11.69, May 16 - Dec 17 $7.61, Aug 17 - Aug 18 $7.60, Aug 17 - Aug 19 $11.69, May 16 - Dec 17 $7.60, Aug 17 - Aug 19 $7.60, Aug 19 9:32 am $11.69, May 16 - Dec 17 $7.58, Aug 21 12:20 pm $7.57, Aug 21 12:20 pm $11.69, May 16 - Dec 17 $7.54, Aug 23 12:21 pm $7.53, Aug 23 - Aug 24 $11.69, May 16 - Dec 17 $7.52, Aug 25 3:10 pm $7.51, Aug 25 3:10 pm $11.69, May 16 - Dec 17 $7.51, Aug 26 7:09 pm $7.50, Aug 26 7:09 pm $11.69, May 16 - Dec 17 $7.49, Aug 29 1:46 am $7.48, Aug 29 1:46 am $11.69, May 16 - Dec 17 $7.45, Aug 31 9:45 am $7.45, Aug 31 9:45 am $11.69, May 16 - Dec 17 $7.44, Sep 2 5:43 pm $7.44, Sep 2 5:43 pm $11.69, May 16 - Dec 17 $7.40, Sep 5 2:21 am $7.40, Sep 5 2:21 am $11.69, May 16 - Dec 17 $7.38, Sep 7 10:08 am $7.37, Sep 7 10:08 am $11.69, May 16 - Dec 17 $7.36, Sep 9 7:14 pm $7.35, Sep 9 7:14 pm $11.69, May 16 - Dec 17 $7.32, Sep 12 3:21 am $7.32, Sep 12 3:21 am $11.69, May 16 - Dec 17 $7.31, Sep 14 5:09 am $7.30, Sep 14 5:09 am $11.69, May 16 - Dec 17 $7.28, Sep 16 6:37 am $7.27, Sep 16 6:37 am $11.69, May 16 - Dec 17 $7.80, Sep 18 - Oct 3 $7.25, Sep 18 8:48 am $11.69, May 16 - Dec 17 $7.80, Sep 18 - Oct 3 $7.69, Sep 20 9:54 am $11.69, May 16 - Dec 17 $7.80, Sep 18 - Oct 3 $7.68, Sep 22 5:23 pm $11.69, May 16 - Dec 17 $7.80, Sep 18 - Oct 3 $7.69, Sep 24 - Oct 9 $11.69, May 16 - Dec 17 $7.70, Oct 5 11:08 am $7.69, Sep 24 - Oct 9 $11.69, May 16 - Dec 17 $7.80, Oct 7 - Oct 9 $7.69, Sep 24 - Oct 9 $11.69, May 16 - Dec 17 $7.69, Oct 11 11:16 pm $7.68, Oct 11 11:16 pm $11.69, May 16 - Dec 17 $7.67, Oct 14 1:59 am $7.66, Oct 14 1:59 am $11.69, May 16 - Dec 17 $7.69, Oct 16 - Oct 20 $7.65, Oct 16 7:58 am $11.69, May 16 - Dec 17 $7.69, Oct 16 - Oct 20 $7.68, Oct 18 - Oct 20 $11.69, May 16 - Dec 17 $7.68, Oct 22 10:29 pm $7.67, Oct 22 10:29 pm $11.69, May 16 - Dec 17 $7.69, Oct 27 5:20 pm $7.69, Oct 27 5:20 pm $11.69, May 16 - Dec 17 $7.67, Nov 1 11:12 pm $7.66, Nov 1 11:12 pm $11.69, May 16 - Dec 17 $7.57, Nov 9 2:07 am $7.57, Nov 9 2:07 am $11.69, May 16 - Dec 17 $7.47, Nov 14 8:32 am $7.47, Nov 14 8:32 am $11.69, May 16 - Dec 17 $7.41, Nov 17 11:30 pm $7.40, Nov 17 11:30 pm $11.69, May 16 - Dec 17 $7.37, Nov 20 9:05 am $7.35, Nov 20 9:05 am $11.69, May 16 - Dec 17 $7.34, Nov 22 11:36 am $7.33, Nov 22 11:36 am $11.69, May 16 - Dec 17 $7.45, Nov 24 - Nov 26 $7.44, Nov 24 - Nov 26 $11.69, May 16 - Dec 17 $7.44, Nov 28 9:21 am $7.43, Nov 28 9:21 am $11.69, May 16 - Dec 17 $7.45, Nov 30 7:45 am $7.44, Nov 30 7:45 am $11.69, May 16 - Dec 17 $7.47, Dec 2 6:35 am $7.43, Dec 2 6:35 am $11.69, May 16 - Dec 17 $7.41, Dec 4 4:58 am $7.40, Dec 4 4:58 am $11.69, May 16 - Dec 17 $7.37, Dec 6 2:40 am $7.37, Dec 6 2:40 am $11.69, May 16 - Dec 17 $7.33, Dec 8 4:24 am $7.33, Dec 8 4:24 am $11.69, May 16 - Dec 17 $7.38, Dec 10 11:42 am $7.25, Dec 10 11:42 am $11.69, May 16 - Dec 17 $7.24, Dec 11 12:59 pm $7.22, Dec 11 12:59 pm $11.69, May 16 - Dec 17 $7.17, Dec 13 11:23 am $7.17, Dec 13 - Dec 15 $11.69, May 16 - Dec 17 $7.17, Dec 13 - Dec 15 $7.15, Dec 15 9:42 am $11.69, May 16 - Dec 17 $7.05, Dec 17 9:22 am $7.05, Dec 17 9:22 am $11.57, Dec 22 2:20 am $7.48, Dec 22 2:20 am $6.42, Dec 22 2:20 am $11.45, Jan 13 - Jan 27 $7.14, Jan 13 12:40 am $7.13, Jan 13 12:40 am $11.45, Jan 13 - Jan 27 $7.12, Jan 14 2:15 pm $7.11, Jan 14 2:15 pm $11.45, Jan 13 - Jan 27 $7.10, Jan 16 6:40 am $7.07, Jan 16 6:40 am $11.45, Jan 13 - Jan 27 $7.05, Jan 18 12:07 am $7.04, Jan 18 12:07 am $11.45, Jan 13 - Jan 27 $7.02, Jan 19 2:54 pm $7.02, Jan 19 - Jan 21 $11.45, Jan 13 - Jan 27 $7.45, Jan 22 7:52 pm $7.45, Jan 22 7:52 pm $11.45, Jan 13 - Jan 27 $7.39, Jan 24 10:42 am $7.39, Jan 24 10:42 am $11.45, Jan 13 - Jan 27 $7.37, Jan 26 3:16 am $7.37, Jan 26 3:16 am $11.45, Jan 13 - Jan 27 $7.46, Jan 27 8:22 pm $7.34, Jan 27 8:22 pm $11.33, Jan 29 - Feb 18 $7.32, Jan 29 12:49 pm $7.31, Jan 29 12:49 pm $11.33, Jan 29 - Feb 18 $7.30, Jan 31 7:09 am $7.29, Jan 31 7:09 am $11.33, Jan 29 - Feb 18 $7.27, Feb 2 2:44 am $7.27, Feb 2 2:44 am $11.33, Jan 29 - Feb 18 $7.18, Feb 3 9:45 pm $7.17, Feb 3 9:45 pm $11.33, Jan 29 - Feb 18 $7.15, Feb 5 3:33 pm $7.14, Feb 5 3:33 pm $11.33, Jan 29 - Feb 18 $7.12, Feb 7 10:13 am $7.11, Feb 7 10:13 am $11.33, Jan 29 - Feb 18 $7.10, Feb 9 5:58 am $7.07, Feb 9 5:58 am $11.33, Jan 29 - Feb 18 $7.05, Feb 11 1:27 am $7.04, Feb 11 1:27 am $11.33, Jan 29 - Feb 18 $7.02, Feb 12 8:36 pm $7.02, Feb 12 8:36 pm $11.33, Jan 29 - Feb 18 $7.01, Feb 14 4:12 pm $7.01, Feb 14 4:12 pm $11.33, Jan 29 - Feb 18 $7.00, Feb 16 12:42 pm $6.99, Feb 16 12:42 pm $11.33, Jan 29 - Feb 18 $6.98, Feb 18 10:39 am $6.98, Feb 18 10:39 am $11.21, Feb 20 - Mar 10 $6.95, Feb 20 8:24 am $6.95, Feb 20 8:24 am $11.21, Feb 20 - Mar 10 $7.22, Feb 22 - Feb 26 $7.21, Feb 22 - Feb 26 $11.21, Feb 20 - Mar 10 $7.20, Feb 28 12:50 am $7.20, Feb 28 12:50 am $11.21, Feb 20 - Mar 10 $7.15, Mar 2 6:24 pm $7.15, Mar 2 6:24 pm $11.21, Feb 20 - Mar 10 $7.12, Mar 4 3:04 pm $7.12, Mar 4 3:04 pm $11.21, Feb 20 - Mar 10 $7.16, Mar 6 - Mar 8 $7.15, Mar 6 - Mar 8 $11.21, Feb 20 - Mar 10 $7.06, Mar 10 9:23 pm $7.05, Mar 10 9:23 pm $11.09, Mar 13 - Apr 1 $7.03, Mar 13 3:39 am $7.02, Mar 13 3:39 am $11.09, Mar 13 - Apr 1 $6.98, Mar 15 10:48 am $6.98, Mar 15 10:48 am $11.09, Mar 13 - Apr 1 $6.91, Mar 18 12:08 am $6.91, Mar 18 12:08 am $11.09, Mar 13 - Apr 1 $6.89, Mar 20 7:12 am $6.84, Mar 20 7:12 am $11.09, Mar 13 - Apr 1 $6.90, Mar 22 4:49 pm $6.80, Mar 22 4:49 pm $11.09, Mar 13 - Apr 1 $6.87, Mar 24 11:05 pm $6.86, Mar 24 11:05 pm $11.09, Mar 13 - Apr 1 $6.84, Mar 27 7:24 am $6.83, Mar 27 7:24 am $11.09, Mar 13 - Apr 1 $6.81, Mar 29 3:33 pm $6.81, Mar 29 3:33 pm $11.09, Mar 13 - Apr 1 $6.88, Apr 1 - Apr 5 $6.79, Apr 1 2:12 am $10.97, Apr 3 - Apr 18 $6.88, Apr 1 - Apr 5 $6.87, Apr 3 - Apr 5 $10.97, Apr 3 - Apr 18 $6.86, Apr 7 3:28 pm $6.86, Apr 7 3:28 pm $10.97, Apr 3 - Apr 18 $6.83, Apr 10 7:52 am $6.82, Apr 10 7:52 am $10.97, Apr 3 - Apr 18 $6.80, Apr 13 4:39 am $6.79, Apr 13 4:39 am $10.97, Apr 3 - Apr 18 $6.70, Apr 16 12:47 am $5.76, Apr 16 - Apr 18 $10.97, Apr 3 - Apr 18 $6.71, Apr 18 1:23 pm $5.76, Apr 16 - Apr 18 $10.86, Apr 21 - Apr 24 $5.75, Apr 21 6:16 am $5.75, Apr 21 6:16 am $10.86, Apr 21 - Apr 24 $5.30, Apr 24 1:20 am $5.30, Apr 24 1:20 am $10.86, Apr 27 - Apr 28 $6.87, Apr 27 4:36 am $5.30, Apr 27 - Apr 28 $10.86, Apr 27 - Apr 28 $5.30, Apr 27 - Apr 28 $5.30, Apr 28 5:41 pm $10.88, May 1 - May 7 $4.86, May 1 12:38 pm $4.86, May 1 12:38 pm $10.88, May 1 - May 7 $4.81, May 4 4:50 am $4.81, May 4 4:50 am $10.88, May 1 - May 7 $4.48, May 7 2:54 am $4.47, May 7 2:54 am OOS $10.88, May 11 1:46 am $6.89, May 11 - May 14 $4.48, May 11 1:46 am $10.88, May 14 8:29 am $6.89, May 11 - May 14 $4.12, May 14 8:29 am $10.90, May 16 - May 28 $6.91, May 16 - May 28 $5.50, May 16 - May 24 $10.90, May 16 - May 28 $6.91, May 16 - May 28 $5.48, May 28 - Jun 11 $10.92, Jun 2 - Jun 16 $6.93, Jun 2 12:07 pm $5.48, May 28 - Jun 11 $10.92, Jun 2 - Jun 16 $5.48, May 28 - Jun 11 $5.48, Jun 7 2:58 am $10.92, Jun 2 - Jun 16 $6.93, Jun 11 - Jun 16 $5.48, May 28 - Jun 11 $10.92, Jun 2 - Jun 16 $6.93, Jun 11 - Jun 16 $5.50, Jun 15 12:13 am $10.92, Jun 2 - Jun 16 $6.93, Jun 11 - Jun 16 $5.48, Jun 16 10:01 pm $10.94, Jun 20 - Jul 23 $6.95, Jun 20 - Jun 24 $5.50, Jun 20 - Jun 28 $10.94, Jun 20 - Jul 23 $5.50, Jun 20 - Jun 28 $5.50, Jun 28 2:25 pm $10.94, Jun 20 - Jul 23 $6.95, Jul 2 5:45 pm $5.48, Jul 2 - Sep 9 $10.94, Jun 20 - Jul 23 $5.48, Jul 2 - Sep 9 $5.48, Jul 7 1:17 am $10.94, Jun 20 - Jul 23 $6.95, Jul 12 2:03 pm $5.48, Jul 2 - Sep 9 $10.94, Jun 20 - Jul 23 $5.48, Jul 2 - Sep 9 $5.48, Jul 16 6:12 am $10.94, Jun 20 - Jul 23 $6.95, Jul 19 - Jul 26 $5.48, Jul 2 - Sep 9 OOS $10.94, Jul 26 10:57 pm $6.95, Jul 19 - Jul 26 $5.48, Jul 2 - Sep 9 $10.94, Jul 30 12:42 pm $5.48, Jul 2 - Sep 9 $5.48, Jul 30 - Aug 10 OOS $10.96, Aug 3 2:38 am $5.48, Jul 2 - Sep 9 $5.48, Jul 30 - Aug 10 $10.96, Aug 6 - Aug 18 $5.48, Jul 2 - Sep 9 $5.48, Jul 30 - Aug 10 $10.96, Aug 6 - Aug 18 $5.50, Aug 14 9:10 am $5.48, Jul 2 - Sep 9 $10.96, Aug 6 - Aug 18 $5.48, Jul 2 - Sep 9 $5.48, Aug 18 - Aug 21 $10.98, Aug 21 - Sep 6 $5.48, Jul 2 - Sep 9 $5.48, Aug 18 - Aug 21 $10.98, Aug 21 - Sep 6 $6.99, Aug 25 3:16 pm $5.48, Jul 2 - Sep 9 $10.98, Aug 21 - Sep 6 $5.48, Jul 2 - Sep 9 $5.48, Aug 29 9:29 am $10.98, Aug 21 - Sep 6 $6.99, Sep 2 - Sep 6 $5.48, Jul 2 - Sep 9 $10.99, Sep 9 - Sep 21 $5.48, Jul 2 - Sep 9 $5.48, Sep 9 10:51 pm $10.99, Sep 9 - Sep 21 $7.00, Sep 13 7:13 pm $5.50, Sep 13 - Oct 19 $10.99, Sep 9 - Sep 21 $5.50, Sep 13 - Oct 19 $5.50, Sep 17 - Sep 25 $11.01, Sep 25 - Oct 11 $5.50, Sep 13 - Oct 19 $5.50, Sep 17 - Sep 25 $11.01, Sep 25 - Oct 11 $5.50, Sep 13 - Oct 19 $5.25, Sep 29 10:18 am $11.01, Sep 25 - Oct 11 $5.50, Sep 13 - Oct 19 $5.01, Oct 3 11:54 am $11.01, Sep 25 - Oct 11 $5.50, Sep 13 - Oct 19 $4.77, Oct 7 2:36 pm $11.01, Sep 25 - Oct 11 $5.50, Sep 13 - Oct 19 $4.54, Oct 11 5:10 pm $11.02, Oct 15 - Oct 31 $5.50, Sep 13 - Oct 19 $5.50, Oct 15 - Oct 19 $11.02, Oct 15 - Oct 31 $5.48, Oct 23 9:42 am $5.47, Oct 23 9:42 am $11.02, Oct 15 - Oct 31 $7.03, Oct 27 7:14 am $5.50, Oct 27 7:14 am $11.02, Oct 15 - Oct 31 $5.48, Oct 31 6:49 am $5.47, Oct 31 6:49 am $11.04, Nov 4 - Nov 14 $7.05, Nov 4 6:39 am $3.97, Nov 4 6:39 am $11.04, Nov 4 - Nov 14 $3.38, Nov 8 9:36 am $3.38, Nov 8 9:36 am $11.04, Nov 4 - Nov 14 $2.95, Nov 12 12:19 pm $2.87, Nov 12 - Nov 14 $11.04, Nov 4 - Nov 14 $7.05, Nov 14 2:20 pm $2.87, Nov 12 - Nov 14 $11.05, Nov 18 - Dec 7 $7.06, Nov 18 11:12 pm $2.44, Nov 18 - Nov 23 $11.05, Nov 18 - Dec 7 $2.95, Nov 23 - Dec 2 $2.44, Nov 18 - Nov 23 $11.05, Nov 18 - Dec 7 $2.95, Nov 23 - Dec 2 $2.07, Nov 27 11:24 pm $11.05, Nov 18 - Dec 7 $2.95, Nov 23 - Dec 2 $1.76, Dec 2 - Dec 7 $11.05, Nov 18 - Dec 7 $7.04, Dec 7 5:54 pm $1.76, Dec 2 - Dec 7 $11.06, Dec 10 - Dec 25 $2.95, Dec 10 8:06 am $1.50, Dec 10 - Dec 15 $11.06, Dec 10 - Dec 25 $7.07, Dec 15 9:01 am $1.50, Dec 10 - Dec 15 $11.06, Dec 10 - Dec 25 $7.04, Dec 20 8:57 am $1.27, Dec 20 8:57 am $11.06, Dec 10 - Dec 25 $7.07, Dec 25 3:36 am $1.08, Dec 25 - Dec 30 $10.94, Dec 30 - Jan 13 $2.95, Dec 30 5:31 am $1.08, Dec 25 - Dec 30 $10.94, Dec 30 - Jan 13 $6.90, Jan 4 12:32 am $5.14, Jan 4 - Jan 8 $10.94, Dec 30 - Jan 13 $5.14, Jan 4 - Jan 8 $5.14, Jan 8 10:48 pm $10.94, Dec 30 - Jan 13 $6.71, Jan 13 8:51 pm $5.98, Jan 13 - Mar 2 $10.83, Jan 18 - Feb 8 $5.98, Jan 13 - Mar 2 $5.98, Jan 18 - Feb 3 $10.83, Jan 18 - Feb 8 $6.77, Feb 8 2:07 am $5.98, Jan 13 - Mar 2 $10.72, Feb 13 - Feb 18 $6.65, Feb 13 - Feb 18 $5.98, Jan 13 - Mar 2 $10.61, Feb 24 - Mar 2 $6.44, Feb 24 5:18 am $5.98, Jan 13 - Mar 2 $10.61, Feb 24 - Mar 2 $6.24, Mar 2 3:09 pm $5.98, Jan 13 - Mar 2 $10.50, Mar 14 11:42 pm $6.44, Mar 14 11:42 pm $5.99, Mar 14 11:42 pm $10.39, Mar 26 4:44 pm $7.52, Mar 26 4:44 pm $6.40, Mar 26 4:44 pm
114,795 1,978,174
2,343,750
1,406,250
937,500
468,750
Oct
Dec
Feb
Apr
Jun
Aug
Oct
Dec
Feb
Apr
2015
2016
Price Details
New
Latest
$10.39 Mar 26, '16
Highest
$11.69 May 16, '14
Lowest
$10.39 Mar 26, '16
Average
$10.57 (30d avg) $10.75 (90d avg) $10.90 (180d avg) $10.92 (365d avg) $11.23 (Lifetime average)
Added
May 16, 2014
3rd Party New
Latest
$6.40 Mar 26, '16
Highest
$7.83 May 16, '14
Lowest
$2.95 Dec 30, '15
Average
$6.34 (30d avg) $6.13 (90d avg) $5.69 (180d avg) $5.97 (365d avg) $6.68 (Lifetime average)
Added
May 16, 2014
3rd Party Used
Latest
$7.52 Mar 26, '16
Highest
$7.69 Oct 27, '14
Lowest
$1.08 Dec 25, '15
Average
$5.98 (30d avg) $5.49 (90d avg) $4.52 (180d avg) $5.03 (365d avg) $6.13 (Lifetime average)
Added
May 16, 2014
Sales Rank
30 day average: 572,603 90 day average: 727,213
Product Description
Where does the fire in volcanoes come from? How does magma find its way to the Earth's surface? What is the Earth's crust? What does a volcanologist do?
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