Bumping somewhat conservatively

http://backpack.tf/classifieds/?item=Backpack%20Expander&quality=6&tradable=1

5 sellers at 3.33, 4 at 3.66, 1 at 3.88, rest at 4+

Sold

http://www.tf2outpost.com/trade/22479654 - 2.33 (instasold)

http://www.tf2outpost.com/trade/22460275 - 2.33 (instasold)

http://www.tf2outpost.com/trade/22366672 - 2.33 (instasold)

http://www.tf2outpost.com/trade/22442822 - 2.33 (instasold)

http://www.tf2outpost.com/trade/22453552 - 2.44 (instasold)

http://www.tf2outpost.com/trade/22471739 - 2.66 (instasold 3 w/o a bump)

http://www.tf2outpost.com/trade/22460464 - 2.66 (instasold)

http://bazaar.tf/trade/1003724 - 3 ref (sold 4 within 5 hours)

http://www.tf2outpost.com/trade/22461676 - 3 ref (almost stocked out within a day)

http://www.tf2outpost.com/trade/22466182 - 3 ref

http://www.tf2outpost.com/trade/22461522 - 3 ref

http://bazaar.tf/trade/1003497 - 3 ref

http://tf2tp.com/trade.php?trade=10254317 - 3.33

http://www.tf2outpost.com/trade/22484525 - 3.33

Selling:

http://www.tf2outpost.com/trade/22461522 - 3 ref

http://www.tf2outpost.com/trade/22484979 - 3 ref

http://www.tf2outpost.com/trade/22449239 - 3.11 (unbumped)

http://www.tf2outpost.com/trade/22471536 - 3.33

http://www.tf2outpost.com/trade/22468255 - 3.33

The following are resellers, which are most likely successful. Note how availabilty < 3.33/3.66 is relatively limited

http://www.tf2outpost.com/trade/19219987 - 2.66 (no stock at all, has lots of demand)

http://www.tf2outpost.com/trade/22329104 - 3 ref

http://www.tf2outpost.com/trade/20606641 - 3.33

http://www.tf2outpost.com/trade/22448620 - 3.33

http://www.tf2outpost.com/trade/22446876 - 3.66

http://www.tf2outpost.com/trade/13692445 - 3.66

http://www.tf2outpost.com/trade/12868027 - 3.66

http://www.tf2outpost.com/trade/22407897 - 3.66

http://www.tf2outpost.com/trade/13832722 - 4 ref

http://www.tf2outpost.com/trade/15572973 - 4 ref

http://www.tf2outpost.com/trade/21696789 - 4 ref

http://www.tf2outpost.com/trade/14464126 - 4 ref

http://www.tf2outpost.com/trade/19756014 - 4 ref

Quickbuyers (at or above current range)

http://www.tf2outpost.com/trade/22343825 - 2.33

http://www.tf2outpost.com/trade/22422940 - 2.33

http://www.tf2outpost.com/trade/22473523 - 2.33

http://www.tf2outpost.com/trade/14723966 - 2.33

http://www.tf2outpost.com/trade/13669092 - 2.33

http://www.tf2outpost.com/trade/20923821 - 2.33

http://www.tf2outpost.com/trade/21603002 - 2.33

http://www.tf2outpost.com/trade/22447750 - 2.33

http://www.tf2outpost.com/trade/22478617 - 2.44

http://www.tf2outpost.com/trade/22083843 - 2.55