This project look promising, hard cap is only 500k USD ?
Correct, the hard cap is 500k USD
That's ico hardcap. But you said presale hardcap will be a little more
Pre-sale individual cap will be higher than on the main sale, that is what was meant.
As for total hard cap for the project (pre-sale + main sale) - it stays 500,000 USD total.
If all tokens, worth $500k, are sold on pre-sale, there will be no main sale.