The tool that was written in a day in January 2013, as it stood after six years of being used every day. One screen per product family, a queue of listings waiting to go out, and an export for every channel the wheels sold on.
What to look at. The board on the home page. Every row is a wheel that has been described but not yet listed anywhere, and the counter at the top is how far behind the shop is. That is the whole idea the business runs on: describe the thing once, then push it everywhere. Then open Add a center cap and look at what it does not ask for. No bolt pattern, no offset, no width. A cap is not a wheel, so the same machinery asks it completely different questions.