What is the difference between subscription plans?

At the moment, we offer one free plan and 3 paid plans:

• Basic plan includes 10 000 API requests a month with a maximum of 50 results on a page. The plan costs $99 per month and offers email support.
• Business plan includes 100 000 API requests a month with a maximum of 250 results on a page. The plan costs $499 per month and offers priority support.
• Enterprise plan is fully tailored to your needs. It can include more than 500 000 API requests a month with a maximum of 1000 results on a page. The plan costs $999+ per month and offers priority support or a dedicated account manager.