You can charge more for this type of work, don't forget, if you do a good job they get there deposit back, which is usually about a thousand pound.
They will probably want the oven cleaned and a new filter, all carpets will have to be clean and any soft furnishings that are left, all paintwork and skirtting boards inside the cupboards.
I would charge at least £200, and really with carpets you should be looking closer to £300.
Steve, have a look at the carpet cleaning section, they would charge £175 just for the carpets.
Hope this helps.