I cut several quilts with one blade and have no difficulties. I have an Olfa mat and use Olfa cutters. I will add that when we travel in our camper I have one of the white, non self healing mats an the blades do not last very long. I am looking to buy a new Olfa mat in a small size to use in the camper where space is limited. I try to do most of my cutting before I leave home when possible. No, blades are not a huge cost for me. I buy quite a few at a time when I find a really good sale.