If you want to buy one of our packages, you can choose between a one-time payment, or subscribing to this package. Subscriptions are recommended if you want to use our service regularly. You can be assured that there are always enough remaining requests in your account. Requests purchased with a subscription can be used within one month. With an active subscription, our system will recharge your account after one month to the selected amount of requests. For example, if you are subscribed to our 25,000 requests package and have used 21,500, our system will replenish your account to 25,000 requests after one month. One-time packages can be purchased for a single use case and can be used within one year. For example, if you want to process an Excel or CSV file, we recommend the one-time purchase. One-time purchases do not renew. You have to make sure to not run out of requests. You can switch between both package types on our purchase page. Please don't mix both purchase types until you have talked to our support first or know exactly what you are doing. Buying a one-time package while you're subscribed to one of our packages can prevent the subscription from refilling your requests. For example, when there are more requests left from the one-time purchase, than the subscription would refill.