Went into a car park the other day and get handed a leaflet for car washing goes like this....
£8 wash and shammy
£10 above and hoover
£15 above and dust and doorsills
£20 above plus wheels and tyres
£35 above and wax
£43 hoover dust interior windows and doorshuts
£43 interior handwash
£65 full valet showroom condition
plus the fact you would have to park in the carpark for hours so add another £5!!!