How much it costs. jest jak najbardziej poprawne, nawet jezeli nie wchodzi w sklad budowy pytania pozornego:
We've got a special offer for all of you wanting to spend a fabulous holiday this year.
How much it costs. (To, ile nasza oferta kosztuje)
It's not as expensive as you might think. For a week's holiday on one of the Caribbean islands, it's only...
:)