I run an eCommerce website that sells used printing equipment. We never have a quantity over 1 of any product because it is all unique used equipment, so our inventory is ever changing. I keep getting 404 errors for really odd permalinks that I would think Google wouldn't be indexing.
This is a perfect example. The reason this page no longer exists is because we have 52 items per page, and our inventory for that category has dropped below 52 items. I don't want to create a redirect because what if we forget to remove the redirect when we go back up over 52 items and add another page. How can I stop google from indexing URLs like this?