Tuition is

"teaching or instruction, especially of individual pupils or small groups" Check an English (British) the original speakers of the tongue.

Tuition to mean "the price of or payment for instruction" as you suggest is North American English, therefore not International English.

And as for you not wanting to takle Cum it means "combined with; also used as (used to describe things with a dual nature or function)…"

So the Adds are Correct for International English the Laguage for Non North Americans