"My suggestions are SICK, brother. Ask your mother, cause she's been upvotin'. Don't blame her, she's only human."

Sold

http://tf2tp.com/trade.php?trade=9630528 - 4 ref

http://www.tf2outpost.com/trade/12750645 - 1 key + 2 ref

http://www.tf2outpost.com/trade/12746321 - 1:1 with Caffeine (0.75-1 key)

http://imgur.com/YaQDBJc - 1 key

http://www.tf2outpost.com/trade/12743083 - 1 key

http://imgur.com/ulkWLYz - 1 key and 1.2 keys

http://www.tf2outpost.com/trade/12738188 - 2 keys

http://trade.tf/listings/search/Sell/Unique/Half-Pipe%20Hurdler/all/6 - Look here for the note history for above!

http://www.tf2outpost.com/trade/12728461 - Possibly 1 key

http://www.tf2outpost.com/trade/12734629 - 1 key and 3 ref

http://www.tf2outpost.com/trade/12727146 - 1 key

http://www.tf2outpost.com/trade/12727009 - 1 key

http://www.tf2outpost.com/trade/12725874 - 4 ref

http://www.tf2outpost.com/trade/12722439 - 4 ref

http://www.tf2outpost.com/trade/12717117 - 1 key

http://www.tf2outpost.com/trade/12716122 - 2 keys

http://www.tf2outpost.com/trade/12714407 - 1 key

http://imgur.com/rC1CTCa - Proof for 1 key here ^

http://www.tf2outpost.com/trade/12711979 - 1 key

http://www.tf2outpost.com/trade/12710045 - 1 key

http://www.tf2outpost.com/trade/12709131 - 1 key

http://imgur.com/RNaqp2O - 1 key

http://www.tf2outpost.com/trade/12703786 - 1 key

http://www.tf2outpost.com/trade/12700960 - 1:1 with Das Haz (4-5.44)

http://www.tf2outpost.com/trade/12700115 - 1 key

http://www.tf2outpost.com/trade/12699339 - 1 key (or potentially less or more)

http://www.tf2outpost.com/trade/12698722 - 5 ref

http://www.tf2outpost.com/trade/12698650 - 5.33

http://www.tf2outpost.com/trade/12696830 - 2 keys

http://www.tf2outpost.com/trade/12696361 - 2 keys

http://www.tf2outpost.com/trade/12694736 - 1 key

http://www.tf2outpost.com/trade/12692056 - 1 key

http://www.tf2outpost.com/trade/12690646 - 1 key

http://www.tf2outpost.com/trade/12685891 - 5.33

Conclusion

Price is 1 key flat due to this being the most commonly traded for price. Anything under is sold extremely quickly, and theres not enough solds at higher to justify a higher high-end. Vote accordingly ^.^

Help / Consturctive Criticisim / Additional Proof / Counter-Proof is ALWAYS welcome! :D