Keep the selected option connected to stock
A buyer should be able to tell whether the option they selected is available now, made to order, backordered, or unavailable.
- Keep the selected size, finish, pack, or configuration visible after it changes.
- Do not let a general 'in stock' message imply that every option is available when only some are.
- Use buyer-facing wording for meaningful differences such as made to order, preorder, or backorder.