So, anything like this out there? What I'm hoping for is something like camelcamelcamel, but tailored towards arcade PCBs - would show historical sold prices on ebay, YAJ, surugaya, mercari, forums, etc. Might be hard to automate for forums, but ebay and YAJ you could probably use their API or scrape the site, at least for the last 3 months of data.
