Disposable cartridges are a scam. This razor shaves close forever.
Why Not Just Buy the Cheap One?
Gillette Mach3 or Harry's cartridges cost $3 each, clog after one use, and give you razor burn. The Merkur 34C uses cheap double-edge blades (10 cents each) that stay sharp, offer a close shave, and don't irritate. The brass handle has heft and will never corrode.
The Buy-Once Math
Over a year of shaving, cartridges cost $50–$100. With the Merkur, you spend $2 on blades. In two years you've saved $150 and have a razor that outlives your grandkids. The math is brutal.