Is there a limit of contracts I can put into zoho?

Is there a limit of contracts I can put into zoho?

I have been researching zoho support to see if it would be good for our ebay business. We would like to see if we can use the module contracts as orders from the customer. We have about 30000 orders per month so that would be a big data.

By the way, does ZOHO support has a database limit for each account?