So I've been looking on craigslist and it seems you can potentially save a fortune by buying some used panels from someone who filled in their pool or a house thats being remodeled etc.
Whats the best way to tell if the panels have some life left in them? I am guessing they will be more pliable vs. hard and brittle?
When the panels are at the end of their life do they just start sprouting leaks more than is economical to repair? how long do they typically last?