Hype for retired hats has ended while ago so price of this hat should go a bit lower.

Grab some proofs:

http://www.tf2outpost.com/trade/9501690 < quickselling for 2.66 buds for a month

Offers:

Lvl 30 white painted max head

2.3 buds

Max head and 8 keys (3 weeks ago)

http://www.tf2outpost.com/trade/8938137 < 1 month old trade, B/o: 4 Bud 4.5+ In Unusuals

Offers:

Harvest Moon Janissary Ketche (offers made 2 weeks ago and when this hat could be worth 2.4-2.9 buds)

Lvl 30 white painted max head

http://www.tf2outpost.com/trade/10304336 < 2 days old, looking for 3-4 buds offers

No offers

http://www.tf2outpost.com/trade/10305146 <- 2 days old

No offers

I think this range is good because there a lot of people who can do lower end in pure and this means they can do a slight more in items and unusuals.