title: Using a minus product price in WooCommerce 2.0
body: <p>for a webshop (WooCommerce 2.0) i want to create a product witch have a negative amount (example €-7,00). This is for a plastic bottle (in Holland we have "Statiegeld"). Is it possible for WooCommerce to create a product with a negative price? In the older version of WooCommerce this was possible.</p>