I don't think you mentioned that you buy your movies used. Prime items are new only. You will be able to save money buying used over new via Prime. The only things I buy on Amazon that usually isn't Prime are used books. Can usually get a paperback in decent shape for under 50 cents.
Yeah, prime isn't good if you're into used movies or books. They pretty much only sell new items, which are going to be more expensive.
Yeah...damn. That's what I was hoping wasn't the case. With DVDs, it's so easy (and cheap) to buy used ones that are "like new" or "very good." They're all guaranteed to play, so there's really not much use in buying new ones, although I do buy those on rare occasion.
Being that I only buy other things here and there from Amazon, it looks like Prime isn't the way to go for me. Preciate all the info from everyone though,