Resuggesting as recommended by Bear

Sales

http://backpack.tf/id/76561198090481438?time=1382252400 ---> http://backpack.tf/id/76561198090481438?time=1382338800

16 keys

http://backpack.tf/id/76561198039621333?time=1380956400 ---> http://backpack.tf/id/76561198039621333?time=1381042800

13 keys + ~1 key in metal = 14 keys (apparently wrong)

Bear's Counter-proof

http://www.tf2outpost.com/trade/16082944 - quickbuyer got it for 15 keys

http://www.tf2outpost.com/trade/13532369

Offers:

Nuts Whoopee + 5 ~18

Steaming pusher + 4 ~17

A guy with a bubbling sensei has offered on a bunch of them ~18 keys

And it seems your sale at 14 sold the same day AND sold for more than 14 - http://www.tf2outpost.com/trade/14838347

Range should probably be closer to 15-18

Conclusion

Well, Bear got dem Counterprufz, so Im resuggesting :3

Help / Constructive Criticism / Additional Proof / Counter-Proof is ALWAYS welcome! >;3