your product is no cheaper wether you do a mate or client.your service is still the same,the products are still the same, the service time is still the same.i only discount if i try a new product or technique.i also do free nails for my best mates weddings.i dont discount and i dont expect my mates to discount me.i have a builder mate, he charges me the same hourly fee when he built my extension,mate who works for a well know aussie cosmetic surgeon who charges me the same.i just get a little extra better service etc.when i worked in a hairdressers i gave then 10% off and they did the same, this is what the owner wanted when i signed his lease.each to their own though.