Sale 1

Sold for dbd glengarry bonnet (23) + 5 keys = (23 * 0.9) + 5 = 26

Sellers bp before: http://backpack.tf/profiles/76561198118150950?time=1428562800 (April 9th)

Sellers bp after: http://backpack.tf/profiles/76561198118150950?time=1428649200 (April 10th)

Sale 2

Sold for electrostatic heavy duty rag (24) and spec ks aussie minigun (28) = (24 + 28) * 0.9 = 47 keys but BO was 40 so capped at 40 keys

http://www.tf2outpost.com/trade/25566125

Buyers bp before: http://backpack.tf/profiles/76561198118150950?time=1428044400 (April 3rd)

Buyers bp after: http://backpack.tf/profiles/76561198118150950?time=1428130800 (April 4th)

Mini for spec ks aussie minigun:

Buyer pays average ~$70

Seller receives average ~$59.50

Scm key price ~$2.30

70/2.30 = 30 keys

59.50/2.30 = 26 keys

Range = 26-30 keys

These are the only 2 sales in date, but I'm gonna include some older ones as support proof:

Sold late december for a nuts n bolts pyromancer's mask ~ 22 keys

http://backpack.tf/profiles/76561198064246025?time=1419062400 (December 20th)

http://backpack.tf/profiles/76561198064246025?time=1419148800 (December 21st)

Sold early december for 2 buds (13 each at the time) and 2 keys = ~ 28 keys

http://i.imgur.com/25G4By8.png

http://i.imgur.com/a9NdoIc.png

Given the previous sales it looks like 40 is an outlier to me. If it was the most recent, with all the others way earlier I'd say maybe the demand is going up, but the first sale for 26 keys was more recent. Not sure though, feedback is welcome/appreciated