The OCR API is prepaid. You buy a page pack, the pages are added to your account balance, and each successful OCR request deducts the number of pages the submitted document actually contained.
There is no subscription, no recurring charge and no automatic renewal. Your balance is only reduced by usage, and only increased when you choose to buy another pack.
Prices for each pack are shown before checkout. A request that fails before the document is analysed is not charged. Purchased pages do not expire.
Payments for 404tools.dev are processed by Paddle.com Market Ltd, which acts as the merchant of record for the transaction. Your purchase receipt, invoice and payment method are handled by Paddle, and their terms apply to the payment itself.