All thrift stores I know of and have donated to exist to raise money for a charity. They should be thrilled to move stock. But the vast majority of books are ne

All thrift stores I know of and have donated to exist to raise money for a charity. They should be thrilled to move stock. But the vast majority of books are next to worthless, so your "read more" crowd will have plenty of options, and won't care that some rare first edition got picked up for premium pricing. If scanners don't find anything to resell (because you've already scanned and correctly priced, or even listed online yourself), they'll leave soon enough.