I am building a website to sell a product. I would like to offer both PayPal and Google checkout as payment methods.
The problem is that each service has their own shopping cart, so if the user goes to purchase through PayPal it would go into the PayPal shopping cart. I would like the product to go into a single cart, then process payment in either of those ways.
Can anyone suggest a way to do this? (free or EXTREMELY cheaply)?
Any overall advice, (like "you're thinking about it all wrong, here's why...") is always appreciated.