Sale 1:

Sold for Death at Dusk Liquidator’s Lid (Mini at 31+ below) + Strange Spec. KS C.A.P.P.E.R. (8) + Burly Beast (3)

http://www.tf2outpost.com/trade/28772349 - B/O of 42

Seller: http://backpack.tf/profiles/76561198023051867#!/compare/1491868800/1491955200

Buyer: http://backpack.tf/profiles/76561198063478666#!/compare/1491609600/1491868800

Only have to prove the Liquidator’s Lid to be at least 31 keys for it to cap here.

X = 42 (Capped by B/O)

Sale 2:

Sold for Pro. KS Aussie Eyelander (31)

No outpost

Seller: http://backpack.tf/profiles/76561198040423618#!/compare/1485907200/1486080000

Buyer: http://backpack.tf/profiles/76561198023051867#!/compare/1485820800/1485907200

X = 31

Liquidator’s Lid Mini:

Sold for Pro. KS Aussie Scattergun (33) + Pro. KS Batsaber (10) + Carlton (1)

Seller: http://backpack.tf/profiles/76561198023051867#!/compare/1492646400/1492732800

Buyer: http://backpack.tf/profiles/76561198154514671#!/compare/1492473600/1492732800

X = 44

Should be enough to prove the lid to be at least 31 keys.

Sellers:

45 keys:

http://i.imgur.com/vILDL2u.png - 1 month

http://backpack.tf/u/76561197999873164

http://www.tf2outpost.com/trade/28763297

http://www.tf2outpost.com/trade/28602634 - 5 months, also listed on marketplace:

https://marketplace.tf/items/54;5;u12

http://backpack.tf/item/381493018

http://backpack.tf/u/76561198057482485

Offers:

http://www.tf2outpost.com/trade/28797924 - 1 month

http://backpack.tf/u/76561198100514826

Sales at:

31

42

Buyers in the classifieds for 31 keys. Excluding 31.

Going with 42 flat.