they'll sell you the price that the movie is currently selling for. for example, collateral is a brand new movie in blockbuster, and there isn't any copies of PRP (Previously played or previously previewed) on the shelf for sell. So, blockbuster would sell you the movie $21.99 or whatever the brand new price of the movie costs. However, if it is an older movie, say Kill Bill Vol. 2, there are tons of PRP copies in the store for sell, so if you were sold the movie, it would sell you the PRP price, which is usually like $12.99 or cheaper sometimes....
and for the person who asked how they are going to automatically sell you the movie- when you sign up for a membership at blockbuster, you need a driver's liscenee and a major credit card to open the account. you also need to provide on the membership form your address etc etc... so they can and probaly will bill you... also, if they are not able to sell you the movie autoamtically, it will leave the necessary balance on your account. so, the next time you go in, you'll have a $whaver balance on your account from the movie they sold you.
ps. i hate blockbuster, shits so boring.. but the free rentals are gggrrreat
/broke college student oner