I boughtn a lot of Olfa blades a couple of years ago. I payed 24.00 with shipping for 50 blades. I don't think I will have to purchase anymore in the near future. I must say I had to buy the HF blades to try. If I ever do run out of Olfas I will relace them with the HF. They are every bit as good as the Olfas.