I am not thinking to provide an API, just a form of database for local query.
I don't understand what it is you wanna charge 100 $ for, and what you mean by local query?
Did you imagine a website that allows users to download .csv file of trading data for Binance where you charge 100 usd for access?
How are you gonna get this data yourself in the first place?
What makes your product different from just using Binances official API ?