Coinbase doesn't allow debit card, I have already tried. I will try circle though, thanks.
They do, but depends where you live. In 28 countries you can. I live in France and my limit was 40 euros and now is 500 euros.
Circle will work for sure in the US, if you are out of US it might work depending on your card.
Also try coincorner.com. This is a new service. My limit there was 300 euros per week. Check their reviews, they are legit.