Don't surprised if you get scammed by this type of service offering you paypal exchange. And of course don't believe most of reviews you find about a service. Make your due dilligence and don't be naive, otherwise it will cost you some money to learn your lesson by the hard way.
It's not really a risk if you do buy a small amount at first to test.
I did go and look and they offer $10 for 11 in paypal to you to send btc to them so why not try for this amount to see if they actually do what they say they will do for you.