For what amounts can I purchase a recharge code?

You can purchase a Google Play recharge code for any amount between ₹10 and ₹5,000.

Note: If you purchase a code for a specific amount and after redeeming it, you’re left with some remaining balance, you can use the balance on any other app or game available on Google Play.

Related question(s):
How do I redeem a Google Play recharge code?