If a product has any product choices, you can't add the item from the shopping cart page. You have to go to the product page and then click add to cart. Works correct if you have required choices. But what about choices that are not required? I would like our customer's to be able to click "add to cart" from the category page if a product's choices are not required. This will streamline a lot of my products that have "add to cart for low price" and choices that are not required to make the purchase.