http://i.gyazo.com/64338a52d3c298415bf13fe6be0d29bd.png

Sale 1

http://www.tf2outpost.com/trade/25310424 | Sold for Cloud 9 Little Buddy + S.F Festive Flare Gun

http://backpack.tf/profiles/76561198109908263?time=1422086400 | Before

http://backpack.tf/profiles/76561198109908263?time=1427007600 | After

Little Buddy valued at 42.5 keys + 1.5 keys of Flaregun = 42.5 + 1.5 = 44 keys. 0.9 x 44 = 39.6 ~~ 40 keys.

Sale 2

http://www.tf2outpost.com/trade/25252602 | Sold for 4 buds

http://backpack.tf/profiles/76561198067186662?time=1425801600 | Before

http://backpack.tf/profiles/76561198067186662?time=1425884400 | After

Sale occured 2015-03-09 [http://web.archive.org/web/20150309013148/http://backpack.tf/], and buds were 12 keys each.

12 x 4 = 48 keys

Sale 3

http://www.tf2outpost.com/trade/25081328| Sold for Disco Beat Down Hazmatten + Pro Aussie Axetinguisher + S.F Knife

DBD Hazmatten (36 keys) + S.F Knife (11 keys) + Axetinguisher (SCM price /2.45)

HOWEVER, B/O of this DBD Headwarmer was 4 buds, thus this should be capped at 48 keys.

Sale 4

http://www.tf2outpost.com/trade/25001578 | Sold for Searing Plasma Bunsen's Burner

Doesnt need mini because price was 1.5 - 2 months at time of trade and its currently 2 months old.

Bunsen valued at 44.5~~ 45 keys. 0.9 x 45 = 40.5 keys ~~ 41 keys.

Sale 5

http://www.tf2outpost.com/trade/25081018 | Sold for Death at Dusk Doctor's Sack

This sale seems extremely low to me, so I will put it as an outlier.

Mini for Dusk Doctor's Sack

http://www.tf2outpost.com/trade/25110918 | Sold with 1 bud for Beams Gonzilla

http://backpack.tf/profiles/76561197971800102?time=1424073600 | Before

http://backpack.tf/profiles/76561197971800102?time=1424246400 | After

Gonzila is 41 keys. Buds were 12 keys at time of sale. 41 - 12 = 29 keys

Looking at all price points here, 40 - 48 keys looks like a great range here.

I rounded up for all .5 key values.