The check for text readable without JavaScript is the one I'd run first, since a client-only page can look empty to a crawler even when the title and schema are fine. A quick way to test it is to fetch the page with curl and see whether the pricing text shows up. If you need a list of companies on a specific tool to show the checker to, https://stackshortlist.dev is what I built for that. Which of the 13 checks do most agent sites fail?