Standard payment options did not work very smoothly (asked to type in CC details, even BEFORE selecting the option 'pay w/ PayPal). Understandably having never heard of this site I was a little hesitant sharing CC details. Pay w/ Amazon, was a good option however, which worked out OK but I wish the original payment flow was smoother because having not worked the first time I forgot to return and try again for a few days and now i'm riding this weekend w/out the gas cap I badly needed... :(
