Interesting project and approach. I would like to host the captures locally though, otherwise I'd risk potentially losing years of captures and other useful information that is works on PageStash only if PS goes under.
Not a fan of subscriptions either, but I guess hosting and LLM analysis is a recurrent cost to PS as well.
I don't care much for the knowledge graph. Pricing-wise, I see it more like $5/m considering that a number of capturing solutions exist (Zotero, SingleFile, Save to Epub etc.).