Sale 1

Sold for 2 keys and ~22 keys in items = (22 * 0.9) + 2 = 22 keys

Seller before: http://backpack.tf/profiles/76561198032623463?time=1434092400 (June 12th)

Seller after: http://backpack.tf/profiles/76561198032623463?time=1434178800 (June 13th)

Compare link: http://backpack.tf/profiles/76561198032623463?time=1434178800&compare=1434092400

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Sale 2

Sold/offered with ~5 key sweets for a tf logo defiant spartan (19-21) = 20 - 5 = 15 keys

Seller before: http://backpack.tf/profiles/76561198057902209?time=1432278000 (May 22nd)

Seller after: http://backpack.tf/profiles/76561198057902209?time=1432364400 (May 23rd)

Compare link: http://backpack.tf/profiles/76561198057902209?time=1432364400&compare=1432278000

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Sale 3

Sold for 23 keys

Seller before: http://backpack.tf/profiles/76561198028680528?time=1435647600 (June 30th)

Seller after: http://backpack.tf/profiles/76561198028680528?time=1437072626 (July 16th)

Compare link: http://backpack.tf/profiles/76561198028680528?time=1435647600&compare=1437072657

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Two solid sales around 22/23, including a pure sale, so discounting 15 as a low outlier. Feedback welcome.