What are the differences between PayPal’s different services (Standard, Express, and Pro)?
A. PayPal Standard takes customers off of the storefront site to pay through the main PayPal site. After payment is received, PayPal tries to send customers back to the storefront site. PayPal Express functions the same way, but allows customers to check out from the shopping cart page rather than going all the way to the payment page. PayPalPro is a fully-integrated payment gateway – customers check out on your site.