Some of my trade sold them very easy so far got too many added rejected everything but keys only accepted.

http://www.tf2outpost.com/trade/7956796

http://www4.picturepush.com/photo/a/11990862/img/11990862.jpg 1 key

http://www4.picturepush.com/photo/a/11990877/img/11990877.jpg 1 key , second buyer 1 key and 3 keys for expander

http://www1.picturepush.com/photo/a/11990884/img/11990884.png 1 key

Other peoples trades : sold

http://www.tf2outpost.com/trade/7854957 1 key

http://www.tf2outpost.com/trade/7850973 1 key each

http://www.tf2outpost.com/trade/7894953 1 key

1 key

1 key

1 key

...

Still seriously i don't know why peoples buying this for more than the price

no need selling buying links , all above are "sold" in the past hours/days

Edit : Just searched for buyers found one offering 3 ref each, failed

http://www.tf2outpost.com/trade/7982122 2 days ago no one bonk in his backpack.