This is what Pottermore says:
"Once you’ve been to Diagon Alley and opened a bank account at Gringotts, you will be given 500 Galleons. You won’t receive any more money for HARRY POTTER and the Philosopher’s Stone, so be careful how you spend it. You’ll receive your next allowance of Galleons when HARRY POTTER and the Chamber of Secrets becomes available to explore. How do I get more money?
Money is hidden away in various parts of the story (see 'Collecting items') so keep an eye out when you’re exploring different chapters and Moments. Anything you find will be added to your Gringotts account but, once you’ve collected all of the Galleons, there will no more to find in HARRY POTTER and the Philosopher’s Stone. You’ll have to wait until HARRY POTTER and the Chamber of Secrets to receive and collect more money."
So except your Gringotts account & the Galleons you find, there will be no more money for the 1st book
