great service mick
what about doing a day were you show every body how all the stuff works,either do it on someone car thats buying the stuff or your own one.
do it on a half decent day, any sunday would problably suit most lads, you could start with a simple wash on one and work from there
i believe its not straight forward to wash a car anymore and and then using the right technic for waxing/polishing
and you could sell all your products on the day