Tryablade.com for me, too, so that may be part of the problem. I thought about buying some from Amazon after, but there are well more than a few comments with the same complaint. Figured if enough other people had the same problem then there must be at least some truth to it.
I saw those as well. I can only speculate that perhaps there's some kind of quality control issue. But...I'm speculating. I'm sure if you get a good batch, they're sharp and smooth.