I have to agree with the majority here. Although Google may be completely secure, most people recognize and trust PayPal and they usually already have an account. If I'm given the choice between PayPal or Google, I'm going to choose PayPal, just because it's quick and easy since I already have that account. I hate their fees, too, but if you only offer Google, I'd likely take my business elsewhere. Offering both could be a great alternative, though, because I know some people are dead-set against PayPal and they may choose you over someone else.