To begin with this type of performance razor, the blade replacement is very important and price is not given for single blades. But that is exactly the model of the original brand and this ensures maximum razor capacity. This is not to change very often but it is to do. This goes with the choice of a razor of this type, the same obligation to preserve and change blades. So very good buy, which was adapted to make. a shell change for a portion of the razor of the case is in the "pack" to also justify the price. This should be less expensive compared to the object and the manufacturing cost but here are the prices imposed by the brand and I knew from the purchase of the razor. Not being disappointed by the razor extraordinary, just the contrary, he had to. So just make sure that it is the model of your razor precisely, it is the only thing to do and it is very well indicated by visual site amazon. At the limit you can check the name given to the blades with numbers on the brand website as per your razor to be sure that it is that correspondent and "find a new razor." Purchase necessary to preserve the qualities of the razor.