From Longman Dictionary of Contemporary Englishit will cost youit will cost youspokenEXPENSIVE used to say that something will be expensive Tickets are available, but they’ll cost you! → cost
Examples from the Corpus
it will cost you• The more successful we are at extending longevity, the more it will cost us.• If you give credit two things will happen: it will cost you money and give you problems. 