SOLD/WILLING BUYERS:

http://www.tf2outpost.com/trade/6953872 1.66

http://www.tf2outpost.com/trade/6939105 2 ref

http://www.tf2outpost.com/trade/6649898 2 ref (almost instantly sold)

http://www.tf2outpost.com/trade/6660293 2.22

http://www.tf2outpost.com/trade/6901719 2.33

http://www.tf2outpost.com/trade/6929997 1 key + 1.66 for 2 (2.33 each, in other words)

http://www.tf2outpost.com/trade/6820296 2.66

http://www.tf2outpost.com/trade/6928986 2.66

http://www.tf2outpost.com/trade/6629505 2.66

http://www.tf2outpost.com/trade/3428546 3 ref

http://www.tf2outpost.com/trade/6877594 1 key

http://www.tf2outpost.com/trade/6889573 1 key

UNSOLD:

http://www.tf2outpost.com/trade/6930658 1 key

http://www.tf2outpost.com/trade/6927931 1 key

OFFERS ONLY:

http://www.tf2outpost.com/trade/6914784 2.66, unknown what sold for

http://www.tf2outpost.com/trade/6958595 2.33 if he reserves it, OP says he sold for more than 2 ref

http://www.tf2outpost.com/trade/6692635 2.33

http://www.tf2outpost.com/trade/6929849 2.33

http://www.tf2outpost.com/trade/6777226 3 ref

http://www.tf2outpost.com/trade/6693514 1 key

http://www.tf2outpost.com/trade/6819434 1 key in items, another of 2.77

More sales on the 1 key end, with a ton of offers for that too, but they`re also unsold for 1 key. Also with the 2 ref and 2.33 sales, this seems to be a good mid-point.