Purple Energy Trophy Belt

Original Price: 4-5 [1 year old]

Level 25s are duped and not included in this suggestion.

http://www.tf2outpost.com/trade/17334494 - Appears to have sold for ~75 keys [~3.8] (owner would take that regardless of whether it sold for that or not)

http://www.tf2outpost.com/trade/17510093 - [4.5] - BP history appears to confirm it ([url]http://backpack.tf/profiles/76561198078313907?time=1391932800[/url])

http://www.tf2outpost.com/trade/17473533 - [4] - BP history backs it up ([url]http://backpack.tf/profiles/76561198055783051?time=1390550400[/url]) with a bunch of keys incoming, the Trophy Belt outgoing, and a minimal change in the BP value.

http://www.tf2outpost.com/trade/18524782 - Disco Beat Down Bubble Pipe [7.2]

http://www.tf2outpost.com/item/440,2335632293,53,5 <> http://www.tf2outpost.com/item/440,2408616512,139,5 - Circling Peace Sign Modest Pile of Hat [3.4]

7.2 is an obvious outlier. Offers on these are fairly regularly above 3.4, making that an outlier as well.

Sales: 3.4, ~3.8, 4, 4.5, 7.2

Final range: 3.8-4.5

Sales with outdated prices:

http://www.tf2outpost.com/trade/18400640 - Scorching Flames Big Elfin Deal + sweets (likely in the range)

http://www.tf2outpost.com/trade/16500505 - Massed Flies Professional's Panama + Massed Flies Hustler's Hallmark (low outlier)

http://www.tf2outpost.com/trade/18349491 - Added Purple Energy Ye Olde Baker Boy for Purple Energy Troublemaker's Tossle Cap + some stuff (low outlier)