Vintages never sell well.

Same as the last suggestion, For future purpose, I had rounded up keys to 6 ref. So, 1 ref = 0.1 keys, 2 ref = 0.3 keys, 3 ref = 0.5 keys, 4 ref = 0.7 keys and 5 ref = 0.9 keys.

Sellers:

Selling @ less than 1.15 keys (1 key and 1 ref):

http://www.tf2outpost.com/trade/13572376 - 1 key

http://www.tf2outpost.com/trade/13546265 - 1 key

http://www.tf2outpost.com/trade/13498497 - 1 key

http://www.tf2outpost.com/trade/13547765 - 1.05 keys

http://www.tf2outpost.com/trade/13559894 - 5.33

http://www.tf2outpost.com/trade/13359670 - 1 key

http://www.tf2outpost.com/trade/12875200 - 1 key

Selling @ 1.1 keys: (Note: I had rounded off the 0.05 keys for further purposes)

http://www.tf2outpost.com/trade/13349838 - 1 week ago

http://www.tf2outpost.com/trade/13199593 - 1 week ago

http://www.tf2outpost.com/trade/13388955 - 6 days ago

Seems like 1 key has outnumbered 1.1 keys and has proven that 1 key are not quicksells. I don't think 1.1 keys is in range anymore. Counterproof or other typical suggestions are welcome. Good Luck and Happy Trading.