I've got a convex Becker BK7 for sale. It's in great shape, no rust or anything of that sort. The only issues with this knife are cosmetic, and most of those are just from the convex sharpening process smoothing out the coating.
I'm asking $100 or best offer. I'll accept Paypal or money orders, but prefer paypal. PM me if you're interested or if you have an offer.