Not hard to find for 1.33, but definitely not impossible for higher.

Thanks to Pan:

http://imgur.com/4N4Oxtz 1.66

http://imgur.com/tpZWaTV 1.66

http://imgur.com/KmT2td0 6 pistols for 1.66 each, bulk discount of .33 :P

http://www.tf2outpost.com/trade/13078708 1.44 sold

http://www.tf2outpost.com/trade/13067377 1.44 sold

http://www.tf2outpost.com/trade/13038476 1.55 sold

http://tf2tp.com/trade.php?trade=9658585 1.66 sold

http://www.tf2outpost.com/trade/12874009 1.66 sold

http://www.tf2outpost.com/trade/12882316 1.66 sold

http://www.tf2outpost.com/trade/13081183 1.66 sold

http://www.tf2outpost.com/trade/13077755 1.66 sold

http://www.tf2outpost.com/trade/13062338 2 ref sold

http://tf2tp.com/trade.php?trade=9655134 2 ref sold

http://www.tf2outpost.com/trade/13098434 2 ref for pistol + bottle (bottle .22, so ~1.77)

http://i.imgur.com/0KJUU6e.png 1.66

http://i.imgur.com/qpdxqCB.png 1.66

http://i.imgur.com/eURupLX.png 1.66

http://i.imgur.com/BkflTXe.png 1.66

http://i.imgur.com/QCjEoN6.png 1.66

http://i.imgur.com/4ArIRda.png 1.66

http://i.imgur.com/9T0MQjx.png 1.66

http://i.imgur.com/f46YwtM.png 1.66

http://i.imgur.com/fkRRsEl.png 1.66 (sniper sold for 1.66)

http://i.imgur.com/Gq55pdc.png 1.66 (sniper sold for 1.66, knife sold for 2 ref)

http://i.imgur.com/zT1dfKy.png 1.66 (scatter sold for 1.66)

http://i.imgur.com/PM7hS97.png craft hat + .44

http://i.imgur.com/tYjk00r.png craft hat + 9 weapons

http://i.imgur.com/B45korI.png 2 ref

http://i.imgur.com/LnIGIDt.png 1.33 + s. sticky (.33-.66) (knife sold for 2 ref)

http://i.imgur.com/k7tcYEM.png 1 key + 3 ref change (~2.66)

http://i.imgur.com/OhkRFey.png champ stamp (2.33-2.66)

http://i.imgur.com/WtAdPgr.png pyromancer's mask + .44 in weps (~2 ref)