Active job

Trade-in new door locks with key locks

We have moved into a brand new house just four months back. We have 6 new "privacy door locks" installed on the doors, which we would like to trade-in for 6 new "key door locks", duly installed. We can pay the difference. We also want the existing main door lock to be replaced with a new door lock having key on both sides. The existing one has key only from outside. We will pay the difference. How much will both the jobs cost us?