around 3 page on outpost http://www.tf2outpost.com/search/223464230

Check classified currently no seller at 3 ref http://backpack.tf/classifieds/?item=Backpack%20Expander&quality=6&tradable=1&craftable=1

quicksold under 3.33 ref

http://bazaar.tf/trade/1012851 sold 10 at 3 ref each within 1 day

http://bazaar.tf/trade/1014560 3 ref sold 3 under a day

http://www.tf2outpost.com/trade/22583611 3 ref sold with no bump

http://www.tf2outpost.com/trade/22580467 3 ref sold with no bump

http://prntscr.com/4mc7a3 3.22 ref sold within 1 day

http://www.tf2outpost.com/trade/22570262 3 ref sold within 16 views

===================================================================

Sold at 3.33 ref or higher:

http://prntscr.com/4mc691 3.66 ref sold quick

http://prntscr.com/4mc6bn 3.33 ref sold

http://prntscr.com/4mc6gc sold 2 for 1 key ( 4 ref each )

http://www.tf2outpost.com/trade/22585790 3.33 ref

http://www.tf2outpost.com/trade/22575670 3.33 ref sold

http://prntscr.com/4mc6xq 3.33 ref sold 2

http://prntscr.com/4mc701 3.33 ref sold

http://www.tf2outpost.com/trade/22574569 3.44 ref sold more than 1

http://www.tf2outpost.com/trade/22573587 3.33 ref dont have it any more

http://prntscr.com/4mc7cu 3.33 ref

http://www.tf2outpost.com/trade/22568404 3.33 ref

http://www.tf2outpost.com/trade/22569084 3.33 ref

http://prntscr.com/4mc7oh 3.33 ref sold

http://www.tf2outpost.com/trade/22568110 3.33 ref sold http://prntscr.com/4mc7sa

http://www.tf2outpost.com/trade/21792976 3.44 ref each sold mroe than 1

http://www.tf2outpost.com/trade/15572973 check newest comments has buyers at 4 ref each

http://www.tf2outpost.com/trade/14273960 check newest comments got buyers at 4.33 ref

http://www.tf2outpost.com/trade/20596513 got a new buyer bought 4 expanders 3.33 ref each

http://www.tf2outpost.com/trade/22497109 sold more than 1 at 3.33 ref each

http://www.tf2outpost.com/trade/22490886 sold at least 1 at 3.33 ref ( check the comment )