@flyire, market cap is not an important indicator because you forget that also BTC will go up. So at the moment XRP 5$ may look like a lot, but in the future XRP 10$ or more is not a problem.
@downb4up, It's important when the token becomes overextended at $4. Otherwise, I think that you are right; the market value can go beyond the market cap/token value due to wild speculation.
$5, at best.