We have been using good checkout for over a year to process payment for plastic cards orders. There has been teething troubles and we still don’t consider this the easiest online payment method however due to our adwords account we have benefited from free transaction processing.
However form the beginning of May 2009 the free transaction processing is being abolished and quite an extensive tier of pricing is being implement.
We like to offer our customers as many payment options as possible however the new charges google are planning to implement may rule this option out for us.
We have always thought it unfair to charge customer a surcharge for paying by credit cards however I guess if someone insists on paying via google checkout after May we may have to look at a surcharge.