You say the pricing is “per rows read” - is this “rows returned to user” or “rows read as a part of query execution”? You probably want to clarify this on the w

You say the pricing is “per rows read” - is this “rows returned to user” or “rows read as a part of query execution”? You probably want to clarify this on the website. Both of those choices have non-obvious consequences. If it’s the former, this means you charge the same for “select one row by primary key” and “select biggest value of un-indexed column in huge table”. And a GROUP_CONCAT can save significant amount of money. If it’s the latter, the monthly service cost depends on how good query optimizer is. A small change in the SQL query, or a version upgrade in the ORM you are using can cost you thousands of dollars per month.