Changelly is an instant cryptocurrency exchange aiming to provide the best crypto-to-crypto rates on the market.
You can buy with FIAT (Credit Card) or trade your Cryptocurrency in the simplest way. Don’t forget to always check the conversion rates. The fees vary a lot.
If you wanto to buy with FIAT, Changelly accepts USD and EUR.
They also have a Altcoins payment button and instant exchange widget that i still not tested but that seems really promising.
Don’t forget to do your own research and try Changelly exchange bellow: