[RichieRich]

If a product is out of stock, the HTML catalog will display the buy buttons until its updated obviously... but when they click buy now, all they can see is, cart is empty, how about if a customer sees alternative text, which explains this item is out of stock in this instance?

Like if out of stock, and buy now button is clicked/typed in the browser, display out of stock message, instead of the cart is empty message.