IStock accepts various payment methods for purchasing digital content, including the most common and major credit and debit cards, such as Visa, Mastercard, American Express, and Discover. At the same time, they accept payments through PayPal, which allows you to purchase directly from your PayPal account or linked bank account. Customers can choose to purchase their credits, which they can then use to download digital content, or purchase a subscription plan, which offers access to a certain number of downloads each month.