Mini suggestion.

Sale #1:

Sold for a C9 Bombing Run

24 * 0.9 = 21.6 keys rounding to 22 keys

http://backpack.tf/profiles/76561198045855411?time=1427524426

http://backpack.tf/profiles/76561198045855411?time=1427526000

Sale #2:

Sold for 4x Collectors Bonk Atomic Punches (3)

12 * 0.9 = 10.8 keys rounding to 11 keys

http://backpack.tf/profiles/76561198046908929?time=1426319494

http://backpack.tf/profiles/76561198046908929?time=1426662000

Sale #3:

Sold for a GC Capotain (15) + Blizzardy Guadalajara (19)

15 + 19 * 0.9 = 30.6 keys rounding to 31 keys

http://backpack.tf/profiles/76561198093171405?time=1429576203

http://backpack.tf/profiles/76561198093171405?time=1429858800

Sale #4:

Sold for 12 keys

http://backpack.tf/profiles/76561198050383840?time=1429772400

http://backpack.tf/profiles/76561198050383840?time=1429858800

Capotain mini:

Sold for 11 keys

Possible quicksell/outlier.

Going with current B/O at 15 keys http://www.tf2outpost.com/trade/25910631

http://backpack.tf/profiles/76561198071905056?time=1425749821

http://backpack.tf/profiles/76561198071905056?time=1426489200

Guadalajara mini:

Sold for a Blizzardy Steel Toe + ~8 keys sweets

Valuing at 19 keys

http://backpack.tf/profiles/76561198053964224?time=1428731031

http://backpack.tf/profiles/76561198053964224?time=1428735600

Bombing Run mini:

Sold for a Smoking HWNN + ~1 key sweets

Valuing at 24 keys

http://backpack.tf/profiles/76561198134024862?time=1431233125

http://backpack.tf/profiles/76561198134024862?time=1431241200

Conclusion: Leaving 11 and 12 key sales as outliers based on current "quickseller" on market for 18 keys that instantly rejected an offer of 10 keys. Same seller invalidates sale at 31. Pricing at 22. http://www.tf2outpost.com/trade/25883618