I shall price this.

Crediting to the last failed suggestion.

http://www.tf2outpost.com/trade/23159317#latest ~ Sold for 8.5 buds at that time

https://pp.vk.me/c622320/v622320660/7589/Y5FofgwdXnQ.jpg

http://www.tf2outpost.com/trade/23761986 ~ Sold for Sulph Tower + Vintage Pro KS Luger + 1 bud + 5 keys = (4.8 + 13/15.12) * 0.9 + 1.3 = 6.4 buds

Vintage Pro KS Luger currently on market starting at SGD$36.81, making it cost about 13 keys.

http://www.tf2outpost.com/trade/23754299 ~ Offered on a Demonflame Samur-eye

Mini for Samur-eye

http://www.tf2outpost.com/trade/22733325 ~ Sold for GBH Tree + Blizz Rack = (5 + 3.35) * 0.9 = 7.5 buds

No mini for rack is able to be done. Feel free to counter or support my proofs.