Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not as good as they used to be.

The other reviewers are onto something... These razor cartridges are not the same quality as they used to be. Some people are saying they're counterfeit; I doubt that's the case but I think they may be just another case of corporate cost-cutting. I used to get a couple of weeks or more out of a cartridge. Now I get a few days before they're shot and my skin starts getting irritated and cut. I'm searching for a new razor but they're all so darned expensive, I'm not really sure if there's anything better or cheaper out there.