I just bought a pair of used allen edmond park avenues on eBay. Uppers look good with the exception of a small crack (just under a cm, can see slight whiteness inside) right behind the cap toe on the left shoe and slight wrinkling of the leather piece that hugs the ankles on either shoes. My question is should I keep them? I've read once the cracking starts, that's it. But if I can maintain them at their current state, which is pretty good, I'll keep them. I just want to know they have a good amount of life left in them.