This plugin allow to insert Paypal buttons in your posts or pages, just using a shortcode. You can define your email and currency in the Settings › Writing admin panel. [paypal type=”add” name=”Item Name vol. 1″ amount=”12.99″] This shortcode will print the “Add to cart” button: it will add “Item Name vol. 1” (priced 12.99[currency]) in your paypal cart. [paypal type=”view”] This shortcode will print the “View cart” button.