Outdated, a slight return on the price (get it bahha)

Proof:

Sellers:

http://www.tf2outpost.com/trade/26143867 (bp.tf price.. so .. 46 keys?)

Solds:

http://backpack.tf/profiles/76561198045855609?time=1430082464 (added 5 keys for a vivid plasma grim)

Mini on the grim:

http://backpack.tf/profiles/76561198064202133?time=1430169200 (sold for a max head ~ 28 keys at the time + key + spec ks v luger ~ 6)

example of a spec ks luger seller for 6: http://backpack.tf/u/76561198161606106

So again according to sugar if its not lvl 1 or 7 max's count as pure and this one was lvl 37. So thats 6x0.9= 5. So thats 34 keys.

x0.9= 31 keys this sale is

Sale #2:

http://backpack.tf/profiles/76561198080008924?time=1428102780 (sold for an aussie medigun ~ 25 + 5 keys) 25x0.9= 23 keys + 5 = 28.

Sale #3:

http://backpack.tf/profiles/76561198132341232?time=1432556570 (added 4 keys for a aussie sniper ~ 33-4= 29x0.9= 26 keys)