Genuine books, magazines and the like are generally 20% off.

D version has many files ~6, 50% off or a dozen or a few ~ you have to look at it yourself ~ some prints are not bad ~

Teaching AIDS, general discount cards are available in stores like this.

Of course, different stores can't be universal ~

Generally, the more you buy, the higher your score and the more discounts you get. But it's only 60% or 70% off at most, so ~

I think it's much more cost-effective to buy books and sell them at the book market ~

Of course, you can also visit some online bookstores, which may save money ~