"Sales older than 2 months old are not valid proof"

"For very rare hats, if there have only been 1-2 sales in the last 3 months, a trade up to 3 months old is okay to use as proof to establish more data points."

Also:

All OFFERED hats and items should be taken at 90% of their original average price.

http://forums.backpack.tf/index.php?/topic/6033-new-unusual-price-suggestion-guide-the-cheat-sheet/

http://www.tf2outpost.com/trade/21405866 - B/O of 1.2 buds and probably sold for lower.

This justifies the low and and the high-end (The Miami Fr-0) without including the 5 month sales. You have my upvote <3

Better than current range and probably close