Formula Based Product

Hey all.

I'm curious if a type of commerce product I want to use is possible. Ideally, I'd like to have a checkout that a customer can enter in a text phrase ("COMPANY") and the item show an updated price based on quantity of characters. I'd like to set a max-min limit of how many characters as well.

It would be awesome to show a preview of that text in one of a few font faces as well.

I have deduced how to make variants with different quantities of characters as a drop-down but that's a pretty bad UX experience and doesn't provide any preview for the customer of the look. Is this just beyond SS commerce?