70s Football
 

A friend of mine has ~1000 cards from late 70s. From the couple photos he sent they do look pack fresh. I asked him to carefully look for '76 Walter Payton but didn't have that card. There is some baseball and non-sport (Creature Feature, Welcome Back Cotter, etc.) but mostly football. What is the best way for him to part with these cards (not my expertise, I'm a 19th century baseball guy).

eBay. If they are post 1975 he’d be lucky to get $100 for the lot wholesale