This custom programming allows for an array you supply to be added in your products table and edited in your Zen Cart admin’s product entry pages for each product. Then the value of the products entered availability (or really any value you like such as returnable or not, new or used etc) is displayed on the individual public product page as well as the shopping cart page. This is a very small and non-invasive way to set very specific values for products which are not normally in the Zen Cart core. Need this? Get it deployed for you here!