Anyone have experience with pricing for financial data providers like Plaid?

Hello all,

I'm curious if anyone has experience with pricing for financial data providers like Plaid. I am comparing a few of these (MX, Teller, and Plaid) for a product I would like to build, but after my modeling it seems like there isn't enough meat on the bone to charge for my value add after paying their charges. I'm guessing I'm doing something wrong since I know there are companies doing things similar. Interested in hearing about others' experiences. Thanks!