halp me pls

Bud prices at the times these trades took place~12 keys

Proof:

Sale 1: Invalid, no mini available for Heavy Duty Rag :(

http://www.tf2outpost.com/trade/24027364 -- Sold for a Sulphorous Heavy Duty Rag

Sale 2:

http://www.tf2outpost.com/trade/25092033 -- Sold for 2 buds pure

Sale 3:

http://www.tf2outpost.com/trade/25112682 -- Sold for 2 buds+ DP Topper

DP Topper= 11.5keys =~0.96 buds

Calculating overpay: 0.96*0.9+2buds=2.86 buds

~2.9 buds

Do let me know if there are any areas for improvement!

Feel free to support/counter my proof(s). :)

kthxbai n hv a niec dey ahed