I'm always doing my sums on the buying of protector, obviously they come n different strength although not stated and also differnt prices, my question is 'how cheap can you sell protector at' or should I say at what price can you profitably sell protector at its cheapest price?
I currently do a a room 12 x 12 for £24 for centres and walkways know as a top up or whole room at £36, realistically worked out on 2/3rds and full room.
Shaun