I haven't tried it yet - just wondered if I should add it as another option on the site or wait for direct credit card authorisation. I'll give it some more thought.
Usually, the credit card service provider, takes set up fees, that can increase with the options that you chose, and then something around 2.5% on each transaction.
Maybe Google are cheaper, i don't know.
But the most important thing, is to make sure that the provider of the service, himself, takes a wide variety of credit cards and runs in all countries without exception.
PayPal for example, does not run in all countries.
Moneybookers is even worse.
You can also accept payments by Western Union. The only problem with Western Union, is that the client himself, will be charged with the fees. Not the supplier. And you must go by yourself to the nearest Western Union office to pick up the payment by yourself.
If the client doesn't mind paying extra fees, this is the best option for the supplier. And the transfer of money is done instantly and you can instantly check it online, or ask the customer, to send you a scan of the payment and transfer voucher, if he wants his goods shipped immediately, without having to wait for you to go pick the payment up.
Western Union is an option that doesn't cost the supplier a dime. It's always advised to have it for those who cannot just pay otherwise.