I'm getting quotes for a wooden 1920s/1930s style front door plus surround at the moment. It's within a porch so is not exposed so doesn't need to be the hardest of hardwood and we'll paint it. The whole frame is not that wide. But the quotes are ranging from £4.5k to £7k. 
I presume it's the cost the making of the door that's making it so expensive so am I better off just buying an off-the-shelf hardwood door and getting a joiner to build the surround/add the glass etc? Has anyone done that and was it significantly cheaper?