Suggesting price is 2.7 - 3

B/O 2 buds 15 keys (low end)

http://www.tf2outpost.com/trade/12076566 2 weeks, no offers

B/O 3 buds (high end)

http://www.tf2outpost.com/trade/11297330 1 month, best offer so far is Smoking Company Man (1.4-1.7 without overpay)

http://www.tf2outpost.com/trade/12326143 6 days, best offer is Steaming Modest (2.2-2.5 without overpay, I personally think it's worth 2 ish)

http://www.tf2outpost.com/trade/12465002

B/O 3.5 buds

http://www.tf2outpost.com/trade/11884217 - no offers, he says he sold one for 3 buds (high end as well)

B/O 4 buds

http://www.tf2outpost.com/trade/12212297 - no offers

Conclusion: Barnstormers are outdated. All need at least a conservative bump.