In the BYOB bundle, merchants would like sold-out products to display a "Sold Out" button instead of the "Add to Cart" button. This helps clearly communicate product availability to customers and prevents confusion.

Functionality Notes:

Inventory status should be checked on page load.

Products that are out of stock should appear disabled or grayed out with a clear "Sold Out" label.

Why it matters:

✅ Better customer experience

✅ Reduces frustration and cart errors

✅ More transparent inventory handling within bundles