I've found selling books on ebay to be a generally losing proposition. Unless something is actually rare or somehow super-high demand for an out-of-print more commonly available ones, I've made a few bucks to actually losing money even with media rate. My last effort were about 5 books all over a 100 years old and by some medium well known authors (or at least I'd heard of them) but none of their A-class works. Bascially ended up giving them away through ebay. Rather buy a older brand name kitchen appliance or attachments and sell them or part them out...