One sold for 7.4. A collector even paid 8.8 pure (was willing to pay a high b/o). But the only 1 for sale on the market has a b/o of 7. Range: 7-7.4

7.4 (7.9 in mixed) - http://www.tf2outpost.com/trade/10339751 – sold for searing scopers + 1 buds + ~15 in sweets (added the seller to confirm)

8.8 - http://www.tf2outpost.com/trade/8767038 – collector paid ~8.8 pure (220 keys with buds at 25 at the time)

Other offers: 4.5 – robo sandvich

CURRENT TRADES

http://www.tf2outpost.com/trade/10345636 – B/O 7 - still young

Best Offer: ~6 (lantern snaggle+pink bills+sweets)

8.8 sale is clearly an outlier, a collector willing to pay any b/o. The other one sold for 7.4. I would put a flat price of 7.4, but the buyer is willing to sell for 7 pure now. So 7-7.4.