I use unique email addresses (breach canaries) on every website to detect when sites leak my data. When I tried to search for my domain results with a previous domain ownership verification, I got hit with this error: "In order to search a domain with any more than 10 breached accounts on it, you need a sufficiently sized subscription"
To make matters worse, Troy includes public data compilations as 'breaches' which artificially inflates counts for the breached accounts quota. For example, when a compilation of public contact details scraped from GitHub leaked, Troy counted that as a breach. I explicitly listed my email address as public.
I'd be willing to pay $5-12/year. These rates are outrageous for such a low-overhead service.