I THINK I DID GOOD THIS TIME!!! :O

edit:

thanks to: Surs, Lerkomenes, 3v1lcl0n3.

So um, I found out i was wrong about something... anyway.

NOTE: I chose the currency to be keys as most of the sales were in keys.

Sale #1 - 1 bud pure:

http://www.tf2outpost.com/trade/24951243

bp before - http://backpack.tf/profiles/76561198107912976?time=1423296000

bp after - http://backpack.tf/profiles/76561198107912976?time=1423382400

Sale #2 - 11 keys pure:

Didn't appear on outpost but i managed to find it:

bp before - http://backpack.tf/profiles/76561198051905623?time=1424505600

bp after - http://backpack.tf/profiles/76561198051905623?time=1424592000

Although it's wierd the guy is re-selling for 11 keys it seems to be true.

Sale #3 - Sold for Dead presidents Data Mining Light:

http://www.tf2outpost.com/trade/24997284

Mini for Dead pres Data Mining Light:

Derel sold it for 10 keys pure:

http://www.tf2outpost.com/trade/22602779

Bp before - http://backpack.tf/profiles/76561198068553284?time=1424160000

Bp after - http://backpack.tf/profiles/76561198068553284?time=1424246400

10*0.9=9 keys

9 is an outlier because there's a quickbuyer for 10:

http://www.tf2outpost.com/trade/23292575

correct range = 11-12 keys.

Sale #4 - sold for prof kit for axtinguisher+strange spec ks original with some parts.

http://www.tf2outpost.com/trade/24937893 - b/o for glengarry was 13 while the b/o for original=7keys+axe=3keys(?)

any kind of support is appreciated, thanks!