Here's an old price very much in need of an update.

Link #1 - http://www.tf2outpost.com/trade/8364512 (1 month)

Offers:

Steaming Flamenco (1.2-1.6 buds) + 1 bud + 10 keys = ~2.6 buds

Max's Severed Head + Strange Huntsman w/Headshot + Strange Sapper = ~2.8 buds

Max's Severed Head + Green Confetti Detective Noir (20-24 keys) = ~2.7 buds

3 buds

Haunted Ghost Chieftan's Challenge (2.6-3.2 buds) = ~2.6 buds

Link #2 - http://www.tf2outpost.com/trade/9182767 (2 weeks) NOTE: same seller in link 1

1 bud + Smoking Samur-eye (1.4-1.7 buds) = ~2.4 buds

3 buds

Many repeat offers as in link #1

Link #3 - http://www.tf2outpost.com/trade/9323354 (1 week)

B/O: 3.5 buds

Offers:

2 buds + Blizzardy Storm Exquisite Rack (1.3-1.6 buds) = ~3.3 buds

Max's Severed Head + Stormy Storm Mullet (26-39 keys) = ~3.1 buds

3 buds (same buyer in link #2)

Link #4 - http://www.tf2outpost.com/trade/9032369

Sold for 3 buds

Analysis:

Only 2 on the market. Seller in links #1 & 2 has an enormous amount of offers up to and including 3 buds, but refuses all of them. Seller in link #3 has offers up to 3.3 in just a little over a week's time, but hasn't had his buyout of 3.5 met. Link #4 sold in a week for 3 buds. Hence a new range of 3 - 3.3 buds.