Amazon Basics school supplies are now as low as $0.25 on Amazon. Note that the price drop is only available for select items, but you can stock up on what you need.
Use Subscribe & Save on the index cards to score up to 5% when you add five or more eligible items to your next delivery. You'll pay as low as $0.94 for 100 cards.
When you have enough school supplies for the year, you have the option to pause or cancel your subscription before the next delivery ships. The best thing about Subscribe & Save is that you're not locked into a contract.