I well remember my very first Olfa Rotary Blade Cutter that I bought at the Seattle area's Sewing Expo oh so many, many years ago. Throughout the years I have bought replacements blades and actually learned how to replace the blades without cutting myself up. I added an Olfa's 45mm cutter to my collection but didn't use it much... UNTIL the cost of the 60mm blades began to go up.
Today I noticed someplace (sorry, don't remember exactly where I was looking) that an Olfa 60mm replacement single blade was $7, I decided to do an online search for 5 pak blades of this brand. Here's what I found.
These are costs of a 5-pak of 60mm Olfa blade replacements:
Overstock.com: 28.49 + 2.95 shipping= $6.29/blade
Olfa.com: 50.99 + 9.90 shiping= $12.18
Amazon.com: 17.65 + 4.99 shipping= $4.53
Buy.com: 36.28 + free shipping= $7.26
I didn't check out JoAnn's nor factor in their 40% & 50% off coupons.
My solution: Harbor Freight's carpet cutter 45mm replacement blades and use them in my Olfa cutter. Sad to me because I have always enjoyed and appreciated Olfa's brand of products.