It's not perfect, but it's better than nothing, I suppose.

I just found 2 recent and valid sales:

http://www.tf2outpost.com/trade/17402228 Accepted 2 Refs.

http://www.tf2outpost.com/trade/17718604 This haven't price, right? Well, I talked with him ----> http://puu.sh/6IQS6.png Later I thought a thing: Request a screenshot to him ----> http://puu.sh/6IROU.png But he doesn't respond. We really don't know when he bought it for 1 ref, so that isn't relevant. He's wrong too, he sold it for 1.66: 2 Refs - 1 Rec = 1.66.

There are other 2 sales, but they are very very old:

http://www.tf2outpost.com/trade/15720508 Sold for less than 3 refs to the follow guy.

http://www.tf2outpost.com/trade/15943334 Sold for 3 refs in items, without overpay.

They are +2 months old sales, so, invalid.

As always, sorry for the bad english, extra-proof is always appreciate, counter-proof is welcome. Comments like "Bad proof, downvote!" aren't useful. If you downvote, explain why. If you upvote, comment that!.