I think this suggestion is better because i have calculated overpay correctly. Before you say I copied I gave the other suggester 30 minutes to resubmit. This is a small range but the proof there supports this!

http://www.tf2outpost.com/trade/8948452 - Only 1 on the market out of 3 in existence!

- Offered a Bubbling Connoisseur's Cap = 19.3 keys w/o. 2 months

- Offered 2 buds + 6 keys = 2.3 buds - 1 month

- Offered a Strange Kritzkrieg = 31.9 w/o + 5 keys = 36.9. - 1 month

- Offered a Smoking Lucky Shot = 1.8 buds w/o + 20 refined = 4 keys + Diamond Wrench with Sapper Destroyed = 4 keys so total is 2.1 buds? - 1 month

-Offered a Orbiting Fire Buccaneer's Bicorne + Vintage Texas Ten Gallon Lvl 1 = 1.9 buds w/o. - 1 month

- Offered a Blizzardy Storm Surgeon's Stahlhelm + Crate #50 = 2.4 w/o - 1 month

- Offered 2 buds + 10 keys = 2.5 buds. - 1 month

- Offered a Searing Plasma Nanobalaclava = 1.4 buds w/o. - 3 weeks

- Offered a Cauldron Bubbles Gentleman's Gatsby = 1.9 buds w/o + 1 bud = 2.9 buds. - 3 weeks

He eventually sold for a Strange Festive Medi-gun = 2.1 + 15 keys = 2.8 buds

I have now contacted the previous owner, he post what he sold it for here for proof as he does not know how to upload screenshots, if you have any issues with this conatct him and teach him how to upload screenshots. Thanks.