I'm in the group that swears by the Harbor Freight blades. I think they work better than the Olfa ones. Love them.
That being said, last month, I bought 10 packs of 2 since they were on sale. I got them and just opened a pack. Both blades were dull. 1 was ridiculously dull. And the package was difficult to open. I opened a 2nd package, and the blade works, but it isn't incredibly sharp like they usually are.
I'm sending an email to HF right now. I was wondering if it was just a fluke with my shipment or if others have noticed the same issues?