http://backpack.tf/classifieds/search/id/5282de3e4dd7b81c4e8b4567 (1 at 2.6 keys, lots at 3 keys, 1 at 3.1, and lots at >3.66)

Unsolds:

3.33 keys:

http://www.tf2outpost.com/trade/15809055 (<1 day)

http://www.tf2outpost.com/trade/15778855 (1 day, painted TS)

http://www.tf2outpost.com/trade/15807755 (<1 day)

http://www.tf2outpost.com/trade/15763856 (1 day)

3.2 keys:

http://www.tf2outpost.com/trade/15810738 (<1 day)

http://www.tf2outpost.com/trade/15808598 (<1 day)

http://www.tf2outpost.com/trade/15803494 (<1 day)

3.05 keys:

http://www.tf2outpost.com/trade/15742110 (2 days)

Selling:

3 keys:

http://www.tf2outpost.com/trade/15753851 (2 days)

http://www.tf2outpost.com/trade/15786898 (1 day)

http://www.tf2outpost.com/trade/15811819 (<1 day)

http://www.tf2outpost.com/trade/15809645 (<1 day)

http://www.tf2outpost.com/trade/15775881 (1 day, has 2)

http://www.tf2outpost.com/trade/15706763 (4 days)

http://www.tf2outpost.com/trade/15778108 (1 day)

http://www.tf2outpost.com/trade/15797438 (<1 day)

http://www.tf2outpost.com/trade/15806363 (<1 day)

http://www.tf2outpost.com/trade/15800936 (<1 day)

2.77 keys:

http://www.tf2outpost.com/trade/15807402 (<1 day)

2 keys:

http://www.tf2outpost.com/trade/15808839 (<1 day)

Multitudes of sellers at 3 keys. >3 no longer needs to be in the range.

Thanks for voting : )