How much would it cost to replace the whole front screen of a samsung impression at the mall?

I dropped my samsung impression quite a few times and the inside screen is broken . The phone itself turns on but you kant see anything. I was wondering how much the mall would charge to replace it.How much would it cost to replace the whole front screen of a samsung impression at the mall?if you live in the uk go to the carphone warehouse and get a quote from one of their repair centres and see what it would cost