hi there
the other thing is, you dont really want your clients looking closely at products, cause they will then look at the price.
and they might then start to do some sums, labour plus materials, why am i paying £xx.xx for the service.
in my opinion keep them away, dont shoot yourself in the foot.
if we are to believe the press, and media, then the economic climate might get a bit tough, so concentrate of the BEST level of service, for the price they pay.
regards
martin