Sale 1: Untraceable

http://backpack.tf/profiles/76561198120643416#!/compare/1492732800/1493337600

Sale 2: Bulk

http://backpack.tf/profiles/76561198120643416#!/compare/1493596800/1493683200

Sale 3: Bulk for D@D Engi Cap

http://backpack.tf/profiles/76561198136981355#!/compare/1490832000/1491350400

Sale 4: 19 keys pure

http://backpack.tf/profiles/76561198340986253#!/compare/1491696000/1492560000

Sale 5: Sold together with Strange Professional Killstreak Pomson 6000 (1.4 keys) & Rancho (17 ref) for Flaming Lantern Western Wear (28 keys) --> ~26 keys

http://backpack.tf/profiles/76561198226262240#!/compare/1493769600/1493856000

http://backpack.tf/profiles/76561198079404789#!/compare/1493769600/1493856000

Sale 6: QS for 14 keys. (There is an active quickybuyer order at 14) --> excluding

http://backpack.tf/profiles/76561198094274080#!/compare/1493856000/1493942400

Sale 7: QS for 14 + 13 ref = 14.45 keys; rounding to 14 keys. Excluding (same reason as above)

http://backpack.tf/profiles/76561198094274080#!/compare/1494288000/1494374400

Sale 8: 17 keys + 10.11 ref; rounding to 17 keys.

http://backpack.tf/profiles/76561198252999692#!/compare/1494374400/1494547200

Two useable sales at 17 and 19 keys. Seller at 18 (unsold for 22 days). Buyer at 14. http://i.imgur.com/rH6rvwI.png

Suggesting flat 17. 17-19 seems too high with unsold at 18 for 22 days.