For some reason my last suggestion only included the low value, here's what I was trying to suggest.

Just sold this for 22 keys after only having it up for 5 days on outpost: http://www.tf2outpost.com/trade/11673447

I also had an offer of 18 keys from a different guy and some other various offers.

The other trades for peace sign mirror all have a bud buyout, but they aren't donators and it's clear they rarely bump (all haven't been bumped in 10+ hours at the time of me looking). I got more offers in 5 days than they have in weeks, clearly because they don't take the time to keep their trade bumped, and thus they make poor proof. The guy who bought mine offered 22 on a few of the other trades as well, but besides that the only other offers are unusuals, a gifted bud, and 16 keys.