I wanted to buy some Ripple but I am using Gemini.
Just Fyi for future.
There are 2 sites that are 100% legit.
Changelly
https://changelly.com
and Shapeshift
https://shapeshift.io/#/coins
I've used Changelly a bunch and friends have used shape shift. They work the same. Changelly you have sign up with account, just email, password. Shape shift no account but shape shift was always out of BTC when I went to change out so that's why I used Changelly.
Also, try as hard as you can to not convert BTC to xyz coin. Reason Your gonna pay super high fees and wait 6 hours cause BTC is junk as a transaction coin. Use like, litecoin or BCH or really anything. I'd stay away, if you could froth Ether just cause their network slow too but since on Gemini have to. It's fine, just won't be instant cause network congestion.
And if use BCH, MAKE 100% sure sending to a BCH wallet and NOT a BTC wallet. So maybe use litecoin, but Ether fine and for sure 100x's better than BTC.
Changelly charges 0.5% for this service. Works great. I'm sure Shapeshift inline with the 0.5%.
Problem, Changelly doesn't have XRP, so have to use Shapeshift.
These are great sites so you can continue using Gemini and still get any coin you want via Shapeshift. Your gonna pay a little above market for this service but better than no coins.