I wanted to do this a few days ago but didn't do it until now :P

Classified ads at the time of posting:

http://m.imgur.com/wK5juLd

http://backpack.tf/classifieds?item=Knife&quality=11&tradable=1&craftable=1&australium=1

4*22 keys (3 have Specialized Killstreak, 1 has Killstreak, 2 have parts attached)

1*22.47 keys

4*23 keys (3 have Specialized Killstreak and parts attached)

Unsolds at 23 keys:

http://www.tf2outpost.com/trade/27568794 (Has parts attached, ~1 day, young)

http://www.tf2outpost.com/trade/27545988 (Has Specialized Killstreak, ~6 days)

http://www.tf2outpost.com/trade/27565688 (Has Specialized Killstreak, ~2 days)

Seller at 22 keys:

http://www.tf2outpost.com/trade/27539193 (~1 week old)

Seller at 21 keys and 10 refined (~21.5 keys):

http://www.tf2outpost.com/trade/27547495 (~6 days old, poorly bumped)

This is all I could find on Outpost that are valid at the time of posting this suggestion.