Last accepted suggestion was 6 months ago, so this strange weapon is somewhat outdated, not to mention that there is only one seller on backpack.tf who is selling his for 2 keys.(Lol) Anyways, here is some proof.(First suggestion so please don't be too harsh.)

Sellers/Solds:

http://www.tf2outpost.com/trade/12548316 (Got offered up to 3.33 ref)

http://www.tf2outpost.com/trade/15948775 (Selling at 3 refined, got a few adds)

http://www.tf2outpost.com/trade/6618590 (Selling for 2.66, out of stock)

http://www.tf2outpost.com/trade/16781150 (Got offers up to 2.66)

http://www.tf2outpost.com/trade/16419915 (Got offers up to 2.33)

http://www.tf2outpost.com/trade/17150134 (I offered 2 ref for it but it was already sold)

http://www.tf2outpost.com/trade/17089377 (Selling for 2 ref, received 2 adds)

http://www.tf2outpost.com/trade/17140146 (I offered 2 ref)

http://www.tf2outpost.com/trade/17132976 (Sold S. Escape Plan for unknown price)

Buyers:

http://www.tf2outpost.com/trade/17054601 (Buying for 3.11 ref)

http://www.tf2outpost.com/trade/17062433 (Buying for 3 ref)

http://www.tf2outpost.com/trade/16981122 (Looking for offers near 3 ref)

http://www.tf2outpost.com/trade/17111873 (Buying for 2.33 ref)

http://www.tf2outpost.com/trade/17135179 (Buying for 2.33 ref) *My Trade*

http://www.tf2outpost.com/trade/17077437 (Buying for 2.11)

http://www.tf2outpost.com/trade/17062191 (Buying for 2 ref)

http://www.tf2outpost.com/trade/14564224 (Buying for 2 ref)

http://www.tf2outpost.com/trade/17108519 (Buying for 2 rec and a craft hat worth 1.33)

http://www.tf2outpost.com/trade/17141410 (Buying for 2 ref)

http://www.tf2outpost.com/trade/17106729 (Buying for 2 ref)

http://www.tf2outpost.com/trade/17053553 (Buying for 2 ref)

http://www.tf2outpost.com/trade/17096421 (Buying for low-end bp.tf price)

http://www.tf2outpost.com/trade/17144572 (Buying for 2 ref)

http://www.tf2outpost.com/trade/17139666 (S. Stickybomb Launcher plus 0.55)

http://www.tf2outpost.com/trade/17113491 (Paying bp.tf price)

http://www.tf2outpost.com/trade/17097821 (Buying for 2 ref)

http://www.tf2outpost.com/trade/17059483 (Buying for 2 ref)

http://www.tf2outpost.com/trade/17078463 (Buying for 2 ref)

http://www.tf2outpost.com/trade/16996788 (Buying for 2 ref)

http://www.tf2outpost.com/trade/16893015 (Buying for 2 ref)

http://www.tf2outpost.com/trade/16981215 (Buying for 2 ref)

2 ref seems like a quicksell to me.

I know some of these trades are badly bumped but the sellers still get offers either way.