Sold-out pages should give a next step, not just a disabled button

A note on sold-out product pages that preserve customer trust with substitutes, branch status, and update timing.

A disabled checkout button protects inventory, but it does not help the customer. A sold-out page should say what size, branch, or date is affected, whether a substitute exists, and when the next reliable update will happen. That small detail can prevent unnecessary calls and bad trips.