>That may be a tradeoff that razor manufacturers are not willing to make.
Razors are so cheap ($0.10 each) that there is simply no reason to make them worse in order to last longer when virtually everyone would rather they work as well as possible and spend another 10 cents a week.
Unless you are buying gillette blades. Even at costco you can spend almost $50 on a bunch of refills.
Unfortunately I seem to have the best shaving experience with gillette blades. I tried Harry's and other brands, but then I tried gillette again and it was markedly better.
Just buy a good old safety razor. You can then buy some good razor blades for less than 10 cent a piece or buy the probably sharpest blades on the planet: "Feather". They are at slightly less than 30 cent a piece.
No matter what you can easily afford a 100 blade pack which will last forever, create less trash than modern razor blades and with a bit of pratice the shave will be at least as good.
Other blades I can recommend: Derby Premium (black). They are at about 5€-8€ for a 100 and of good quality and sharpness.
They are coated in platinum, each blade lasts about a week, and when I bought my 100 pack, it was 25 cents per blade, although now it's up 38 cents on Amazon.
For the razor, I also use a feather razor, about $160, which is expensive, but one will last a lifetime.
YMMV, but the feather razor is extremely safe and easy to use, although you don't have the same level of control as with other razors. It's a good beginner's razor but I've stuck with it. Shaving is dead simple, I never get cuts, and I don't even use any shaving cream, I shave after getting out of the shower and the hairs are already soft.
You know I have, but I have moles on my face and have to be SUPER careful. With the gillette blades it's always been not only a nice close shave, but I can do it fast.
"Stropping" a disposable razor cartridge on a towel or blue jeans after use, i.e.stroking in the reverse of the shaving direction, will extend its life by at least an order of magnitude in my experience.
I stopped using blades ~3 years ago (used to buy Gillette). Bought a Philips 7000 ( https://www.digitec.ch/de/s1/product/philips-series-7000-s75... ) which I use with water & shaving cream (just a little bit, not as much as when using blades) and I have since then 0 irritations and always a perfect shave without any cuts. I replace the set of rotating blades once every ~1.5-2 years (which means that I replaced them once, hehe). I tried previously 2 other brands/models of electric razor but I didn't like the feeling (I don't liketo shave "dry") nor the results, but this one of Philips is in my opinion totally different.
I don't know why, but I nick and bleed very easily.
My brother (and former roommate) is a cutthroat partisan. He's kinda nutty about tools, precision, etc. Such a great shave. But somehow his face is more durable than mine.
I've tried every kind of shaving.
My Braun 5 is the best product purchase I've ever made. In any category. It's not the greatest shave, for my face. But I never bleed, or get a rash.
I'm on my third Braun. I keep the retired unit for traveling.
The last Mach3 blades I clipped on sit there for almost 2 years now. Still shaving fine. Are the blades dull? Undoubtedly. Do I notice that? Not at all. The only time I have small cuts on my face is just after I start using a new blade.
PS. The blades have this psychological marketing trick of the blue indicator bar, where once it is worn away it is supposedly time to get new blades. Just ignore and use as long as it shaves. Your mileage may vary compared to me, but I'm still getting rid of quite heavy-duty stubbles without issue.
I don't think there will be much difference between, say, one month of use and times that are longer than that. Of course a good cleaning after use is necessary.
Skip the flavour of the month and go with their older products - for which the cartridges are far cheaper (especially with frequent deals). I still use the Sensor series cartridges - more blades just makes for more clogging of the cartridges.
Gillette double-edge safety razor blades are about 0.10 USD each. Gillette cartridge razors are about 6 USD each.
The former is "expensive razor handle, cheap blades". The latter is "cheap razor handle, expensive blades".
The more expensive cartridge razors don't provide a superior shave, but are much much safer to use.
A safety razor handle costs as much as a pack of cartridge razor blades.
The keywords to lookup would be "wet shaving" to find out more about the safety razors.
You say that like double edge blades are super unsafe. At worst if you are unskilled you end up with a minor cut which you just stick a band aid over and are perfectly fine.
Razors are so cheap ($0.10 each) that there is simply no reason to make them worse in order to last longer when virtually everyone would rather they work as well as possible and spend another 10 cents a week.