Hi, I have a website which currently accepts one-off payments using PayPal as a competition entry fee, I'm considering also adding Google checkout as an alternative. The process i have setup with PayPal is this: User clicks Pay now button -> User pays -> User redirected to my paypal processing script which marks that user as 'paid' in my database. I've been searching around the web and can't see any method of replicating this functionality with Google checkout (ie passing data back to my site [namely the email address] from google). Am i missing something? :/ Any help would be greatly appreciated!
You need to use one of the GCO API's. There are several notifications that Google will send back to your site: http://code.google.com/apis/checkout/ Since google does not allow p2p transfers like paypal, the payment isn't instant. It normally takes 5 - 10 minutes for the transaction to be charged and approved.
Ah ok, thanks for the help. Would you recommend adding PayPal alternatives or will it be more hassle than it's worth in your opinion?