Link 2 Has a b/o at 3.3 Buds no one is accepting, I don't think 4 buds would be correct if no one is going to buy it for 3.3Buds

http://www.tf2outpost.com/trade/6489022 Started 2 days ago, 3.5 b/o

http://www.tf2outpost.com/trade/5879422 started 3 weeks ago, looking for 4.5 b/o (3 weeks ago), got an offer of a gen. Friends Forever Companion Square Badge (about 4 buds, but he declined)

I don't think someone is going to pay the 4.5 b/o, so this suggestion is pretty accurate.

limited effect, top tier hat, i see this going for 2.9+