From the beginning of this year, Apple Stores have offered in-store glass replacement for the Apple iPhone 5c, with similar service available for the Apple iPhone 5 since last year. Apple charges $149 for a screen replacement, significantly cheaper than the $229 that the company charged consumers to have a screen replaced off-site.
By allowing these repairs to be made at the Apple Store, the company can reduce repair costs and wait times. A typical glass replacement could take just 30 to 60 minutes in-store.
source: 9to5Mac via MacRumors