2 years is a long time.

Sale 1

Sold for an Eerie Bubble Pipe (43) + 4 keys

http://backpack.tf/profiles/76561198110351066#!/compare/1466294400/1466380800

http://www.tf2outpost.com/trade/28266235 ----- B/O was 40 keys, but sold quickly.

http://www.tf2outpost.com/trade/28254608 ----- Previous B/O was 45, capping at 45.

=======> 43 + 4 = Capped at 45 keys

======================================================

Sale 2

Sold with a key for a Stare from Beyond Mongolian (mini at 24.7) + Stormy Bolted Bicorne (19.5)

http://backpack.tf/profiles/76561198055479389#!/compare/1465776000/1465862400

http://www.tf2outpost.com/trade/28253988 ----- B/O was 35 (or 38?) keys, but it sold quickly, so i'm overlooking the B/O.

Mini for the Mongolian: Sold for 24 keys and Summer Shades (~0.7)

http://backpack.tf/profiles/76561198115775158#!/compare/1465948800/1466035200 (sort by time)

=======> 24.7 + 19.5 - 1 = 43 keys

======================================================

Sale 3

Sold for a KaW Berlin Bowl (23) + 3 keys + Strange Spec. Ks. Festive Knife (mini at 6.2)

http://backpack.tf/profiles/76561198111637432#!/compare/1465689600/1465776000

http://www.tf2outpost.com/trade/28250193 ----- B/O was 38 keys, but it sold quickly.

Mini for the Knife: Seller for ~6.2, taking 6.2. http://imgur.com/a/4PJ77

=======> 23 + 3 + 6.2 = ~32 keys

======================================================

Sale 4

Quicksold for 35 keys

http://backpack.tf/profiles/76561198079480867#!/compare/1465603200/1465689600

http://www.tf2outpost.com/trade/28243834 ----- B/O was 35 keys

=======> 35 keys (qs)

======================================================

Sale 5

Sold for 32 keys

http://backpack.tf/profiles/76561198002757046#!/compare/1465430400/1465516800 (sort by time)

No Outpost trade

=======> = 32 keys

======================================================

Sellers

- http://imgur.com/a/NlFWa ----- 50 keys

Summary

- Sales for 45, 43, 32, 35(qs), 32(?).

Going with 43-45 keys. Why am i ignoring the other sales? Well, the sale for 32 keys pure might have been a quicksale (Rubi is banned from Outpost ao i can't be sure), and the new owner quicksold it again for 35 keys with no problem. The sale for 32 in unusuals looks like an outlier. The sales for 43 and 45 also happened quickly.

Criticism appreciated!