Yep I'm looking at used solar since I have a ton of roof space and land area, and the shipping is 50% of the price of a pallet of panels. Even if they're derated 25% and 20% fail, the racking and balance of system outweigh them to a silly degree. It's going to be 80% balance of system 20% panels.

If you plan on mounting to your roof beware of expired fire ratings. I ran into this problem recently