gznfx, don't think you are crazy at all and a couple of e-mails several months ago about used dvds (many these appear as though they may be new) received no replies. Believe one person shopping e-bay could/could have save a whole bunch of cash. AND speed of building inventory. There are several other companies, some with branch offices, who sell used dvds also. Typical e-bay vendor shipping costs on a dvd of, maybe $2.50 for a $3 buck dvd, could hurt but if you find a good source am sure they could bulk mail them.
At this point there may be a drawback about buying a big lot instead of individual dvds. A big lot may contain a bunch of really off the wall titles.