I use Aurora Postgres at work, where we pay approximately 9x more for equivalent resources to PlanetScale (according to their pricing page [1]). This is not an endorsement of PlanetScale as I've never used it, just pointing out that the premium for using Aurora Postgres is many multiples higher than virtually every other Postgres provider.

1. https://planetscale.com/pricing?architecture=x86-64&cluster=...