2nd unusual suggestion so lets get this party started

sellers (no sellers on bp tf2 classifieds or bazaar.tf)

http://www.tf2outpost.com/trade/26598694 10 keys (no offers on the football helmet)

http://www.tf2outpost.com/trade/26435165 key offers (no offers on the football helmet) (won it in a raffle)

http://www.tf2outpost.com/trade/25734077 pure or unusual offers (no offers on the football helmet)

Buyers: none, anywhere

there are people buying any unusual for 7 keys

Sales:

http://imgur.com/qCzQrMQ sold with a collectors direct hit (4.7-5 keys), 10 ref and a pro ks back scatter (1.2 key) for a orbiting planets industrial festivizer (worth 16 keys) = helmet sold for 9.3 keys

http://imgur.com/dO1Ke3t sold for 8 keys pure

feel free to put any counter suggestions/proof but plz be kind and caring :)