I have a craftsman 48" cut mower.. it came with a mulching deck.. i have a very sandy yard and the blades only last about 2 cuts.. yard size is about 2 acres.. Sometimes i can sharpen them and get another cut. I've tried origional equipment and sever after market blades.. same result.. does anyone market a blade at any price that will last on my mower...I go thru about 10 sets of blades in a season. getting expensive..