Nope! You have unlimited access to our financial data source. You may hit our rate limit if you attempt to pull a lot of data simultaneously, but one re-call and it will be right where you want it. It's important to note that Google imposes its own daily quota of 20,000 external requests for a single, free Google account. This is a very large daily allowance, but if you intend to use SF heavily, you can increase this daily quota through upgrading your Google account. Read more about limits and quotas in our detailed documentation.