No its not in my opinion, and I'l tell you why I think this way, from the viewpoint of a buyer of hosting products.
I recently had my Paypal account frozen by an unscrupulous buyer saying they didnt recieve an item I sent.
When your paypal account is frozen it means you cant send or recieve payments. It also means you cant use any of their other paypal services, i.e Paypal credit card payment gateways that dont require you to log in.
This has caused huge problems from some of the hosting accounts I have & the repercussins have been immense. Ive lost 2 customers within a week & have money frozen in my paypal account.
Also, from the viewpoint of a seller who uses paypal to recieve payments. They can freeze your account at any time, holding your money for an unlimited ammount of time. If the money you will be recieving is your sole income I think you should take a look at this site before deciding to channel your payments through Paypal only
http://www.paypalwarning.com/