> ## Documentation Index > Fetch the complete documentation index at: https://trakkr.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Usage & Billing > Understanding how usage works within Prism All upgraded Trakkr accounts allow you to access Prism, and include 10,000 crawler requests per calendar month. This should be sufficient for all small sites and many medium-sized sites. If you own a larger site that's receiving more than 10,000 crawler requests per month, you can enable overage billing. This is billed at \$5 per additional thousand crawler requests, and is added onto your subscription at the end of each calendar month. To enable overage billing, you must also set a spend cap. This spend cap increases your limit from the base 10,000 crawler requests per month. So for example, if your spend cap is \$100, your new request limit will be 30,000 crawler requests per month. This is because you get 10,000 requests for free, and $100 divided by $5 gives 20, or an extra 20,000 requests (10,000 + 20,000 = 30,000 total request limit). Request Limit = 10,000 + ( ( Spend Cap / 5 ) \* 1,000 )