Scorching Flames Salty Dog (6-6.5 buds)

http://www.tf2outpost.com/trade/10280616

sold for 6 buds (check history of them: http://www.tf2outpost.com/trade/10322655 )

http://www.tf2outpost.com/trade/9598222

sold for p.e. honcho's (4.8) + 1 bud + 15 keys = ~6.5 pure

http://www.tf2outpost.com/trade/9006828

sold for 4 buds + lantern bombing run (2) + 8 keys + sf rocket launcher = ~8 pure --> outlier

http://www.tf2outpost.com/trade/8957835

6 buds

http://www.tf2outpost.com/trade/8936160

6 buds

http://www.tf2outpost.com/trade/7934044

the guy who bought the first one for 6 buds offered 6 buds + 100$. --> another outlier

Conclusion: Very tricky here. But most sales happened at 6 buds so I put the range somewhere near that.