I meant 100 yen for used DVDs, and about 398 Yen for renting new releases. Not a very expensive endeavor at all.
Sometimes you'll be lucky to find a Blu-ray for 100 yen in the tiny clearance bin.
Some stores have a policy of buying at least 10 Dvds to activate the 10 for 1000 yen.
Other just discount them, you'll have off numbers such as 112 yen, depending on the titles.
Others will be in the bargain bin.
LOTS OF AVs. You'll find that the most popular titles will be reprinted, and will be heavily discounted because there's so many copies of them.