Ludwic interlocking ceramic English tile reclaimed

I have inherited a massive pile of old reclaimed interlocking roofing tiles I haven't had a chance to get it all cleaned up and get a exact number on how many are still 100% useable. But before I go and do all that im trying to make sure it's going to be worth my time and effort. How much does a pallet go for? My understanding that is 215 -250 shingles. Please get back with me at your earliest convenience please. I respond a lot faster to my phone 6365518142 call or text me anytime