The PayPal Web Payments Plus & Express Checkout module for osCommerce. The module is easy to install and configure as per the installation guides (see the README.txt file). Merchants are required to have a PayPal business account to use the module, and can sign up for an account. When using Web Payment Plus, you have to apply to PayPal in addition to having an PayPal business account. Learn more about Web Payment Plus at https://www.paypal.jp/jp/contents/service/web-payment-plus/ Learn more about Express Checkout at https://www.paypal.jp/jp/contents/service/express-checkout/