This plugin allow to insert Paypal buttons in your posts or pages, with a shortcode like [paypal type="add|view"].
Codecanyon plugins
Best (wordpress) plugins and scripts for your site!
Visit codecanyon.net
Themeforest wordpress
Best (wordpress) themes and templates for your site!
Visit themeforest.net
ebayStore
For ebay store owners. Imports your products from your ebay store and allows you to sell products through your wordpress website/blog.
WP-osCommerce
osCommerce for WordPress.
FatFreeCart Plugin and Sidebar Widget
Fat Free Cart plugin is an extension of FatFreeCart. With FatFreeCart Plugin you do not have to generate or paste any code in CSS or HTML of WordPress
Software Shop
Add self-maintaining software shop to your WP powered site and monetize your blog.
BestSmallShopLite
Best Small Shop is an e-commerce and shopping cart plugin for WordPress that accepts online payments through PayPal.
WPSC DTA Export
Export orders from [WP e-Commerce Plugin](http://wordpress.org/extend/plugins/wp-e-commerce/) as DTA-File. This fileformat is used as automatic paymen
WPSC Stock Counter
Plugin for the [Shopping Cart Plugin](http://wordpress.org/extend/plugins/wp-e-commerce/) to count stock also of connected products.