What are the possible websites to get a good deal on purchase of books?

Book Depository or Kinokuniya.

The best though is to pay it vai Grabpay Master card etc becuase when you top up grabypay credits via UOB one card for $500 for 5 transactions in one month for each month in the billing quarter, you can earn 8-10% cash rebate

This is my go-to site: https://www.bookdepository.com

Here is everything about me and what I do best.​​​