http://backpack.tf/classifieds/search/id/5200bcb7ba2536936a000000 (6 at 3, 1 at 4)

Proof:

Unsolds:

3.2 keys:

http://www.tf2outpost.com/trade/16106096 (<1 day)

http://www.tf2outpost.com/trade/16078987 (1 day)

http://www.tf2outpost.com/trade/15789923 (2 weeks)

http://www.tf2outpost.com/trade/15704816 (2 weeks)

http://www.tf2outpost.com/trade/16062000 (2 days)

3.15 keys:

http://www.tf2outpost.com/trade/16117913 (<1 day)

http://www.tf2outpost.com/trade/16115921 (<1 day)

http://www.tf2outpost.com/trade/16088004 (1 day)

http://www.tf2outpost.com/trade/16093227 (1 day)

http://www.tf2outpost.com/trade/15349368 (1 month)

http://www.tf2outpost.com/trade/15997287 (4 days)

Selling:

3 keys:

http://www.tf2outpost.com/trade/16096834 (<1 day)

http://www.tf2outpost.com/trade/16094999 (<1 day)

http://www.tf2outpost.com/trade/16108416 (<1 day)

http://www.tf2outpost.com/trade/16032074 (3 days)

http://www.tf2outpost.com/trade/16118745 (<1 day)

http://www.tf2outpost.com/trade/16109135 (<1 day)

http://www.tf2outpost.com/trade/16086492 (1 day)

http://www.tf2outpost.com/trade/16119177 (<1 day)

http://www.tf2outpost.com/trade/16117380 (<1 day)

http://www.tf2outpost.com/trade/16106411 (<1 day)

http://www.tf2outpost.com/trade/16040300 (2 days)

http://www.tf2outpost.com/trade/16111372 (<1 day)

http://www.tf2outpost.com/trade/15828748 (1 week)

http://www.tf2outpost.com/trade/16104737 (<1 day)

http://www.tf2outpost.com/trade/16096941 (<1 day)

http://www.tf2outpost.com/trade/15755240 (2 weeks)

http://www.tf2outpost.com/trade/16094570 (<1 day)

http://www.tf2outpost.com/trade/16069086 (1 day)

2.66 keys:

http://www.tf2outpost.com/trade/16089692 (1 day)

3.15 and 3.2 keys are not seling. More sellers at 3 keys that both 3.15 and 3.2.

Thanks for voting : )