We plan on charging organizations using Quadratic for collaboration. Our pricing will be low so it's affordable to get seats for the whole team. Think <$15 / user / month.
I can’t imagine you can really charge less, but is there a huge market for an excel substitute that costs more than excel and doesn’t interoperate? I understand the reasons why this is cooler/better, but IME when people want to step up from excel it’s either because they have some use case that fits a BI tool or they are going to hire a dev. (Real problem is that they never realize Excel isn’t enough until it’s the backbone of their company… but…)
Best of luck though, this looks super cool!