The Problem I had a question recently about why a coupon was not being processed at the PayPal end. It turns out that PayPal will not process a $0.00 sale. If you have an item for $10.00 and a discount coupon for $10.00 the coupon is processed on the WP e-Commerce checkout page showing a … Continue reading WP e-Commerce, how to process $0.00 sales and 100% coupons which PayPal will not accept