Sale 1:

Sold for 70 keys

No outpost

Seller: https://backpack.tf/profiles/76561198221996600#!/compare/1502928000/1503187200

Buyer: https://backpack.tf/profiles/76561198055617854#!/compare/1503100800/1503187200

X = 70

Sale 2: (Dupe)

Sold for Kill-a-Watt Gross Hat + Bad Effect Trophy Belt + ~39 keys in things

http://www.tf2outpost.com/trade/29382068 - B/O of 60

Seller: https://backpack.tf/profiles/76561198021055079#!/compare/1506556800/1506643200

Buyer: https://backpack.tf/profiles/76561198160732392#!/compare/1506470400/1506643200

The Gross Hat and Bad Effect would have to be less than 21 keys combined for this to not cap.

X = 60 (Capped by B/O)

Sellers:

No B/O:

http://www.tf2outpost.com/trade/29350424

Sales at:

60 (dupe)

70

60 is duped, so it doesn’t belong here. Excluding 60.

Going with 70 flat.