Sale 1:

Sold for $48.99 on Marketplace.tf

http://backpack.tf/item/243818966

Cannot yet identify the buyer, the sale only just occurred.

https://marketplace.tf/items/338;5;u6

48.99/2.1 = ~23.3

X = 23

Sale 2:

Sold for $45.89 on Marketplace.tf

http://backpack.tf/item/369068181

Buyer: http://backpack.tf/profiles/76561198112663388#!/compare/1490227200/1490313600

https://marketplace.tf/items/338;5;u6

45.89/2.1 = ~21.8

X = 22

Sale 3:

Sold for Power Surge Gentleman’s Ushanka + ~6 keys in items

http://www.tf2outpost.com/trade/29188273 - B/O of 20

Seller: http://backpack.tf/profiles/76561198002757046#!/compare/1495152000/1495238400

Buyer: http://backpack.tf/profiles/76561198170823105#!/compare/1495152000/1495238400

Ushanka is outdated, but this’ll easily cap.

X = 20 (Capped by B/O)

Sales at:

20

22

23

No current sellers.

Going with 20-23.