I currently use PayPal free merchant gateway to accept infrequent purchases one or more in combination of up to a dozen items. I would like to add Google Checkout as an option, but the problem is that the quantity in the Google Cart cannot be changed (nor the item selected multiple times) once the Checkout button is clicked.
I need someone to code a form that will accept a quantity for each of up to all 12 items (textboxes), and sum the items for a total so that when the Google Checkout button is clicked, the correct dollar amount and item description (to be provided to selected service provider) is transferred based on before transferring the data to Google for checkout. Some simple data validation will also be required (i.e. when ALL fields are null and checkout button clicked, display popup 'Error: Google Checkout quantity cannot be zero." ([ok button]
This should be a relatively simple and quick project to carry out for an experienced developer. Some collaboration will be necessary to install and test the code. You must have recent positive feedback to be considered. Please forward examples of your experience with Google Checkout.