Good afternoon Nikki, as a very rough guess, allow 20m2 on the front, 20m2 on the back and 50m2 on the side.
Price per meter varies between £40 and £70 depending on style and material.
Guide price allow between £3600 and £6300 usually much closer to bottom price to be honest.
If you're in Kent look us up. FocalPoint Repointing