7k. I’ve done millions before, particularly in large hierarchies like consumer packaged goods (CPGs). But in a pure JS Webflow-hosted solution, even 7k is somewhat pushing things on the performance side. It can be done though. Is that a stable 7k, i.e. not likely to grow far beyond that?
If so, with some careful setup, that would be 4 page requests and a hierarchy build plus a caching layer. Or, you sync to an external db like Xano, and have the hierarchy build external so it’s performant.
A big part of how you build this depends on how you’re using it, e.g. whether you’re trying to display the full hierarchy at once or just retrieve a single path. Similarly, what you’re doing with it matters a bit to the planning.
Cost range for a good build would be somewhere in the $500-1000 range, and more if you want it to be highly performant through an API.