I missed quite a bit from my previous high end, trade was in fact not a simple 1:1 and quite frankly I have no idea how I managed to miss that many items. With everything else factored into the sale you get a final value of essentially 0 for the CK.

http://i.imgur.com/k9v3uYO.png

http://www.tf2outpost.com/trade/21067217

Offered on (and sold for) Stormy Storm Tough Stuff Muffs (~5.3)

http://www.tf2outpost.com/trade/19933603

Took a day to sell at 4 buds + 10 keys (~4.7). Wrote this off as a quicksell last time given the time frame and the fact I had a higher seller. The sale wasn't terribly far off and with one less sale above 5 I think it's safe to include this in the range.

http://backpack.tf/profiles/76561198072503827?time=1404802800 (Day trade opened, has CK)

http://backpack.tf/profiles/76561198072503827?time=1404889200 (The day after, no CK)

http://www.tf2outpost.com/trade/21487045 - 5 bud B/O, 1 day old right now