Resuggesting again following Polar's and Kaushuman's advices about the price ranges of this item

My previous suggestion : http://backpack.tf/vote/id/53633ad44dd7b8d7018b4939

10 months old price

1) Sold for 50 pure keys ----> (50 / 19.5 ) = 2.56 ---> 2.5 buds

http://www.tf2outpost.com/trade/19529244 ---- I've also checked the seller's backpack and believe me is REALLY full of keys

2) Sold for GE Pyro's Beanie + 6 keys two weeks ago = (2.8 * 0.9 + 6/19.5) = 2.8

http://www.tf2outpost.com/trade/18984492

3) Quicksold for 39 keys = 2 buds ( not used as a proof - quicksell )

http://www.tf2outpost.com/trade/18283787

4) Polar's : "Well, I got it + 8 keys for a hearts guad. My B/O on the hearts guad was 3. So that would be another sale at ~2.6"

Other sellers on outpost :

1) Asking for 2.8 buds http://www.tf2outpost.com/trade/19459753

2) Asking for 3 buds http://www.tf2outpost.com/trade/19086066

Additional proofs provided by Vince :

http://puu.sh/7AAE5.png - Added with a Blizz Bonk + BMOC + 10 in sweets for PE waxy ---> 2.75 buds --->2.8

http://puu.sh/8vME6.png Ghosts Guad + ~1.2 in sweets ---->2.9 ---> 3 ( outdated ghosts gudalajara )

MINISUGGESTION FOR GHOSTS GUADALAJARA :

Sold for a GE prancer one month ago : http://www.tf2outpost.com/trade/18832468 ---> 2.1*0.9 = 1.9 buds (considering overpay)

RANGE SETTING :

I'll take 2.5 as lower and 3 as higher bound prices.

Thanks again to Vince for the really useful additional proof and to the two price moderators that helped me here