A 3 blade razor and or blade cartridge is 3-5 dollars a piece. So you end up a dull blade you keep around for way too long because you don't want to buy more of them. You still end up spending 60 bucks a year and still supporting proctor and gamble.
Or... Learn how to shave with a double edge razor. A 100 pack of Derby blades is 9.99. You can have a 2 year supply and still shave with a new blade every time.
A handle might cost 30-60. 120 for a lifetime handle.
I have had to teach myself, my father and my father-in-law how to shave. They literally had no clue that another way even existed, perhaps beside an electric razor. Blows my mind.