On classfields:

http://backpack.tf/classifieds/search/id/5201e9da4bd7b88016000003

Full with sellers for 0,22:

http://i.imgur.com/qA326nn.png

Sellers:

http://www.tf2outpost.com/trade/14257383 - 1 scrap

http://www.tf2outpost.com/trade/14158121 - Look how only jarate is unsold, even for 0,22 ..

http://www.tf2outpost.com/trade/14254376 - 0,22

http://www.tf2outpost.com/trade/14004898 - 0,22

http://www.tf2outpost.com/trade/14051805 - 0,22

http://www.tf2outpost.com/trade/14245338 - 0,22

http://www.tf2outpost.com/trade/14254747 - I think he is selling the vintage for 0,22, and the strange for 0,55

Unsolds - 0,33 ref:

http://www.tf2outpost.com/trade/14235431 - Young

http://www.tf2outpost.com/trade/14227827 - Young

http://www.tf2outpost.com/trade/14189803 - 2 days (underbumped)

http://www.tf2outpost.com/trade/14199387 - 2 days

http://www.tf2outpost.com/trade/14121415 - 5 days

http://www.tf2outpost.com/trade/14136543 - 5 days

http://www.tf2outpost.com/trade/14090170 - 6 days

http://www.tf2outpost.com/trade/14102810 - 6 days

http://www.tf2outpost.com/trade/13970565 - 1 week

http://www.tf2outpost.com/trade/14061060 - 1 week

http://www.tf2outpost.com/trade/14023940 - 1 week

http://www.tf2outpost.com/trade/13954818 - 1 week

http://www.tf2outpost.com/trade/13915216 - 1 week

http://www.tf2outpost.com/trade/13992748 - 1 week

http://www.tf2outpost.com/trade/13979978 - 1 week

http://www.tf2outpost.com/trade/14006595 - 1 week

http://www.tf2outpost.com/trade/13978828 - 1 week

http://www.tf2outpost.com/trade/14055676 - 1 week

http://www.tf2outpost.com/trade/13999637 - 1 week

http://www.tf2outpost.com/trade/13591936 - 3 weeks

http://www.tf2outpost.com/trade/13591603 - 3 weeks

http://www.tf2outpost.com/trade/13657798 - 3 weeks (underbumped)

http://www.tf2outpost.com/trade/13527871 - 4 weeks

http://www.tf2outpost.com/trade/13506852 - 4 weeks

http://www.tf2outpost.com/trade/12870170 - 1 month

http://www.tf2outpost.com/trade/13039644 - 1 month

http://www.tf2outpost.com/trade/12980271 - 1 month

http://www.tf2outpost.com/trade/12901587 - 1 month

http://www.tf2outpost.com/trade/13332827 - 1 month

http://www.tf2outpost.com/trade/12429633 - 2 months ( ° ͜ʖ ͡°) [1 guy offered 0,22 though ;D]

I can find more proof, but think it's enough. Not much 0,22 sellers but look at those unsolds.