Only one usable recent sale.

Offered on a harvest dappers (5.5):

http://www.tf2outpost.com/trade/23205334

There was another sale before this which was my sale (1:1 with a spellbound liquidator's lid: http://www.tf2outpost.com/trade/23193023 ) which is slightly below the 2 months mark. However, that sale was used to price the lid previously. If we were to take that sale into account, it will be valued at 5.2 buds which is pretty close to the suggested range.