sydcode

This plugin allows for custom editing of product prices in WooCommerce. This version only supports simple and external/affiliate products, but support for variable products will be added to a future version.
This is not an official WooCommerce plugin. Please do not bother the nice WooThemes people with support questions. All questions and suggestions should be posted in the plugin forum.
Thanks to Anthony for sponsoring this plugin.

WooCommerce Prices

This plugin allows for custom editing of product prices in WooCommerce.

timbim

This widget enables you to display the ALTERNATE ZackZack live shopping offers (zack-zack.eu) within your WordPress blog in one single widget. You can add the widget to your sidebar and customize its appearance as you like inside the boundaries of its presentation options.

WooCommerce Prices vs WP-ZackZack