This price was set when it was 1 of 1. There are now 2. 1 sold for 6.5. That guy had been trying to sell it for 6 pure for a few weeks before setting his B/O at 7. Highest offer in last 2 months: 6.5. Next best offers are around 6. Range=6-6.5.

ACTUAL SALES

6.5 (7.1 in unusuals) - http://www.tf2outpost.com/trade/9428689 – blizz flamenco + PE attendant

Other offers: 5.8 (5+2011 festive set)

So this guy had it on the market for ~2 weeks at 6 buds and then raised his B/O to 7 buds with no takers. Setting this sale at the high end seems reasonable.

CURRENT TRADES

http://www.tf2outpost.com/trade/9488223 - 1 month on the market

Best Offers:

6.1 (skull fruit shoot)

6 (72 keys + steaming wrap + sweets)

5.8 (5 buds + 2011 festive set)

http://www.tf2outpost.com/trade/10340934

Best Offers:

5.7 (6.2 in unusuals) – bubbling wrap+bubbling CM+stormy buddy+pink bills

High end is easy with the sale at 6.5 (also highest offer in 2 months)

Setting low end at 6 because, although there are a few non-pure offers in that range that were rejected, one seller was unsuccessful at selling for 6 for a few weeks before raising his b/o to 7.