Originally Posted by tregmatt
Paul you been in the game a long time and if you now you tested them
you now hes trying it on but to keep you rep and for the sake of £40
just tell him to return them and ask him if he wants a refund or other set
of fans that way you will keep his custom

is this the sort of customer he wants though?
the point about marking items is that you will always get soemone who will clean them to bling them up or complain because you've put a tinest spot of paint where no one will ever look
perhaps its time to start putting some sort of mark on just to make sure people know thats the case, something invisable perhaps?
but it's the cost involved that mightnot make it worth the effort eh