Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fair Price

I bought these to refill my Gillette M3 Power (the green one), because they're cheaper than the dedicated "power" refills, and fit just as well.The blades do their job, in the sense that they secure to the bottom of your razor-holder, clip on to your handle, and cut hair off of your face.I've found that they last longer by "honing" the blade against denim jeans, or the skin of your arm before each shave.