Sale 1

http://www.tf2outpost.com/trade/25999559 Sold with spec australium medigun for pro australium minigun+s.f sandvich

http://backpack.tf/profiles/76561198045366924?time=1432278000 Seller before

http://backpack.tf/profiles/76561198045366924?time=1432364400 seller after

Taking Medi Gun as 26 keys due to classified listings for spec ones: http://backpack.tf/classifieds/?item=Medi%20Gun&quality=11&tradable=1&craftable=1&australium=1

SCM Price is higher than that

Pro Australium minigun Mini:

http://steamcommunity.com/market/listings/440/Strange%20Professional%20Killstreak%20Australium%20Minigun

Average of about ~$90. 90/2.49 ~ 36 keys

X+26= (36+5)*.9 .... X = 10.9 Rounds to 11 keys

Sale 2

http://www.tf2outpost.com/trade/25909509 10 Keys Fast but doesn't really seem like an outlier relative to other buyouts

Bp.tf history is near impossible to track on either buyer or seller so just taking his word for it.

http://www.tf2outpost.com/trade/25624382 he tried for 12 before

http://www.tf2outpost.com/trade/25349445 untraceable.

http://www.tf2outpost.com/trade/25949307 untraceable

http://www.tf2outpost.com/trade/26032034 Using this for kaw halogen

Going with 10-11 keys.

If you have any other sales/info please let me know.