It's actually possible to get this for 2.33 in classifieds, but I'm leaving it out to be on the safe side, as I can't find proof of many trades going through at that price.

Unsold for 3 ref

http://www.tf2outpost.com/trade/7250835 - Unsold for 3 ref

Unsold for 2.88

http://bazaar.tf/trade/110424 - Unsold for 2.88

http://www.tf2outpost.com/trade/7843882 - Unsold for 2.88

http://www.tf2outpost.com/trade/7885236 - Unsold for 2.88

Selling/Sold for 2.66

http://bazaar.tf/trade/111115 - Selling for 2.66

http://www.tf2outpost.com/trade/7758184 - Selling for 2.66

http://www.tf2outpost.com/trade/7767432 - Selling for 2.66

http://www.tf2outpost.com/trade/7905197 - Sold for 2.66

http://www.tf2outpost.com/trade/7849085 - Sold for 2.66

Quite easy to get at 2.66, there's no reason to keep 3 ref in the range. Will probably drop to 2.33 - 2.66 in a couple of weeks.