UPDATE: Standard PayPal Revisions

Specifying an “alternate url” for the PayPal Standard gateway entry will now apply (so anyone can use the sandbox if they wish by simply pointing it at the sandbox url https://www.sandbox.paypal.com/cgi-bin/webscr?)

A fully detailed of items, quantities, prices, and totals will appear on PayPal when the order is submitted.

The flow has been improved. I have removed the extra button click after checkout, and will automatically redirect to PayPal after hitting “Place Order.”