They also cut the fabric multiple layers high with a giant stamping tool. The more layers of fabric they cut at once the more variance there is between top layer and bottom layer but the cheaper the process is. Higher quality cheap brands will advertise that they only cut x amount vs what the competitors cut so they have less variation.
I started with a $15 double edge safety razor that I used for years. I bought the $70 Henson razor because I wanted a better shave, but the results are about the same as the $15 razor I started with. The Henson razor glides better so I can get the same quality shave with less time. I can also shave twice (one across the grain once against) if I want a better shave, but it still isn’t the smooth shave I was hoping for. The henson razor came with 100 blades, but you can also get 100 blades for $10 on amazon.