Sale 1 -

http://backpack.tf/profiles/76561197986206421#!/compare/1464998400/1465171200

Sold for 38 keys

Sale 2 -

http://backpack.tf/profiles/76561198093585253#!/compare/1465603200/1465689600

Added 11 keys for an Professional Killstreak Australium Knife and Ambassador

50 - 11 = 39

http://prntscr.com/bto249 Seller for the Ambassador at 19.77

http://prntscr.com/bto28a Seller for the Knife at 29.97

19.77 + 29.97 = ~50

Sale 3 -

http://backpack.tf/profiles/76561198093585253#!/compare/1464739200/1465171200

Bulk

Sale 4 -

http://backpack.tf/profiles/76561198213366708#!/compare/1465948800/1466035200

Added about 6 keys (some of the keys weren't added) for a Purple Confetti Fedora

33 - 6 = 27 (Low)

Mini for the Fedora -

http://backpack.tf/profiles/76561198005782106#!/compare/1466121600/1466553600

Sold with a Circling TF Logo Party Phantom for an Arcana Counterfeit Billycock

55 - 22 = 33

Mini for the Party Phantom -

http://backpack.tf/profiles/76561198094881984#!/compare/1467590400/1468022400 Sold for ~22 keys