Did not expect to find THIS much proof.

And by that I mean, no minis needed at all.

Sellers:

http://www.tf2outpost.com/trade/25939857 30 Keys, 3 days unsold

http://www.tf2outpost.com/trade/25927218 30 Keys, 5 days unsold

http://www.tf2outpost.com/trade/25935265 28 Keys, 4 days unsold

Solds:

Sold for a Dead Presidents Frenchman's Beret(15 Keys with Overpay, Outlier)

http://backpack.tf/profiles/76561198070697329?time=1425606064 -> http://backpack.tf/profiles/76561198070697329?time=1425628800

Sold for an Australium Spec KS Wrench(~22.5 Keys with Overpay) and a Strange Festive Frontier Justice(~1.5)(~24 Keys total, Outlier)

http://backpack.tf/profiles/76561197987459499?time=1430982000 -> http://backpack.tf/profiles/76561197987459499?time=1431154800

Sold for a Green Energy Coupe D'Isaster(17 Keys with Overpay)

http://backpack.tf/profiles/76561198095130685?time=1425970800 -> http://backpack.tf/profiles/76561198095130685?time=1426137407

Sold for 18 Keys

http://backpack.tf/profiles/76561198063094683?time=1430204400 -> http://backpack.tf/profiles/76561198063094683?time=1430290800

Sold for 1 Bud(9.5 Keys at the time) and 8 Keys(17.5 Keys total)

http://backpack.tf/profiles/76561198086846963?time=1427439600 -> http://backpack.tf/profiles/76561198086846963?time=1427527790

http://backpack.tf/profiles/76561198124586760?time=1427180400 -> http://backpack.tf/profiles/76561198124586760?time=1427526000

http://www.tf2outpost.com/trade/25375950

Sold for 1 Bud(12 Keys at the time), a Bill's Hat(3 Keys at the time) and ~1 Key in Sweets(16 Keys total)(Took a day, quicksell?)

http://backpack.tf/profiles/76561198095130685?time=1425801600 -> http://backpack.tf/profiles/76561198095130685?time=1425884400

http://www.tf2outpost.com/trade/25321851

Sold for a Smoking Master's Yellow Belt(19 Keys with Overpay)

http://backpack.tf/item/686596346 Belt History

http://backpack.tf/item/1767668175 Shako History

Sold for a Dead Presidents Condor Cap(24 Keys with Overpay) and ~7 Keys in Sweets(31 Keys total, Outlier)

http://backpack.tf/profiles/76561198065369941?time=1430722800 -> http://backpack.tf/profiles/76561198065369941?time=1430950933

Sold for a Miami Nights Chieftain's Challenge(21 Keys with Overpay)

http://backpack.tf/profiles/76561198069021594?time=1427731972 -> http://backpack.tf/profiles/76561198069021594?time=1427785200

Sold for an Australium Grenade Launcher*(17 Keys with Overpay)

http://backpack.tf/profiles/76561198028722444?time=1427698800 -> http://backpack.tf/profiles/76561198028722444?time=1427941378

Sold for Miami Nights Soldier's Slope Scopers(26 Keys with Overpay)(B/O was 20 Keys)

http://backpack.tf/profiles/76561198041570341?time=1426834800 -> http://backpack.tf/profiles/76561198041570341?time=1426982031

http://www.tf2outpost.com/trade/25444466

Sold for 1 Bud(9.5 Keys at the time), 7 Keys and a Strange Sniper Rifle w/ Parts(~0.5)(17 Keys total)

http://backpack.tf/profiles/76561198071061810?time=1427007600 -> http://backpack.tf/profiles/76561198071061810?time=1427284879

*The items were traded, however big purchased a spec ks kit from the Steam Market and applied it to the grenade, hence the untradable part.

Sales at 15, 16, 17, 17, 17, 17.5, 18, 19, 20, 21, 24 and 31. Made 15, 16, 24 and 31 the outliers. 17-21 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.