Replacement windows and doors rough cost

piaget

Looking for a rough idea of prices for replacing windows and doors on a 2 bed terraced Corporation house in Crumlin.

Front is Palladio hall door and two front windows.

Rear is one small bathroom window and one large bathroom window, one back bedroom window which can be opened enough for fire escape onto valley of extension roof.

One large six foot window on side of extension and one set of french doors.

Currently have white double glazed PVC but nearly twenty years old so seals and locks are starting to fail.

Any advice would be appreciated as if the costs are too high I'll have to break it into 2 or 3 separate jobs but house front and french door would be bare minimum.