I mentioned above that I use Bic disposables for travel, the ones I have were bought a decade ago, it takes a long time to go through a bag of a dozen if you almost never shave when you travel. Just weighed one, 5.4 grams. Ones like this but with a white handle.
https://www.amazon.com/Single-Blade-...dp/B01FSWZ8DI/
I think I have a skin allergy to shaving creams, every time I try one I get a rash. I just use soap, never have tried a brush. For soap, now with liquid hand soaps readily available, use that, used to use a bar of glycerin based soap before liquid hand soaps became ubiquitous.
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https://www.dollartree.com/pears-tra...oz-bars/118669
But when I travel, usually only carried a bar of Ivory for showers and shaving.
Blade life, I think that some people want to brag how tough they are, and that extends to how tough their beard is, they think it manly to brag that they wear out a blade for only a few shaves or maybe only one. When I find a blade is noticeably dull, I change blades.