Craftable = Non-Craftable

Sales :

http://www.tf2outpost.com/trade/21403636 - 2,33

http://www.tf2outpost.com/trade/21401720 - 2,33

http://www.tf2outpost.com/trade/21400490 - 2,33

http://www.tf2outpost.com/trade/21400280 - 2,33

http://www.tf2outpost.com/trade/21399884 - 2,33

http://www.tf2outpost.com/trade/21397033 -> http://www.trade.tf/trade/485458188 - 2,33

http://www.tf2outpost.com/trade/21393807 - 2,33

http://www.tf2outpost.com/trade/21392336 - 2,33

http://www.tf2outpost.com/trade/21391463 - 2,33

http://www.tf2outpost.com/trade/21390475 - 2,33

http://www.tf2outpost.com/trade/21389014 - 2,33

http://www.tf2outpost.com/trade/21389014 - 2,33

http://www.tf2outpost.com/trade/21378558 - 2,33

http://www.tf2outpost.com/trade/21376657 - 2,33

http://www.tf2outpost.com/trade/21371110 - 2,33

http://www.tf2outpost.com/trade/21390393 - 2,44 (Sold out)

http://www.tf2outpost.com/trade/21213184 - 2,66

http://www.tf2outpost.com/trade/21404955 - 2,66

http://www.tf2outpost.com/trade/21358097 - 2,66 (x2)

http://www.tf2outpost.com/trade/19533500 - 2,66 (Sold many, have more in stock)

http://www.tf2outpost.com/trade/19933029 - 2,66 (Sold some, have more in stock)

http://www.tf2outpost.com/trade/20855033 - Out of stock at 2,66

http://www.tf2outpost.com/trade/20822149 - 2,66 (Sold some, have more in stock)

http://i.imgur.com/MDUmvl1.png - I sold one for 2,77 + craft wep

http://www.tf2outpost.com/trade/21302354 - 2,88 (Claims to have sold 9 at this price)

http://www.tf2outpost.com/trade/21332212 - 3

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Credits to Subtlefuge for the following two links :

http://imgur.com/qSqQqfu - 3

http://imgur.com/fQqOP35 - 3

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http://i.imgur.com/eRUxRYk.png - I sold 3 for 9 ref

http://i.imgur.com/30wuM1F.png - I sold one for H5 taunt minus 1 ref (~3)

http://i.imgur.com/CdGEhRg.png - Sold another for 3

http://i.imgur.com/vOon5hm.png - And another for 3

http://i.imgur.com/WOg88P7.png - I sold for S. rl (2,66) + Koala (1,66) for name tag + 1,33 = ~3

http://i.imgur.com/hQ8DPr2.png - I sold 3 name tags for sub zero suit = overpay in items but that's at least 3+

http://www.tf2outpost.com/trade/21353323 - 3,11

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Offer :

http://www.tf2outpost.com/trade/20401510 - 3,33

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Buyers :

http://www.tf2outpost.com/trade/21093811 - 2,33

http://www.tf2outpost.com/trade/21405891 - 2,33

http://www.tf2outpost.com/trade/21398829 - 2,33

http://www.tf2outpost.com/trade/15990035 - 2,33

http://www.tf2outpost.com/trade/21375531 - 2,33

http://www.tf2outpost.com/trade/21368963 - 2,33

http://www.tf2outpost.com/trade/21213710 - 2,33

http://www.tf2outpost.com/trade/21364486 - 2,33

http://www.tf2outpost.com/trade/19533501 - 2,44

http://www.tf2outpost.com/trade/21342678 - 2,55

http://www.tf2outpost.com/trade/21374191 - 2,66

http://www.tf2outpost.com/trade/21367758 - 3

http://www.tf2outpost.com/trade/20547746 - 3 (Willing buyer in last comment)

http://www.tf2outpost.com/trade/21116215 - 3 (In items)

Conclusion :

2,66 ref and 3 ref are possible. Too many sales still happens at 2,33 so leaving it in the range for now.

Any extra proof is highly appreciated.

All credits to ♫ MoPcKo cBuH4e :d