A Good Girl's Guide to Murder Combo. Contains the whole series of 3 books:

1. A Good Girl's Guide To Murder
2. Good Girl, Bad Blood
3. As Good As Dead

Purchased the set for ₹700 on Amazon. It's so good I finished it within a week of purchasing and therefore selling at 50% resale value. Please do not bargain as it's already such a good deal at 50% discount and it's not even used. It's literally just new.