electric shaving machine is painful as hell
Uhm... what? I think you're using it wrong. How can a device which cuts the
hair (which have no nerves and feel no pain) be painful? Are you sure you weren't tricked into buying some sort of DeWalt orbital sander or some kind of fucking machine?
I will give you a tip. One Mach 3 Razor will last indefinitely as long as it dries properly after usage. Shaving is not enough to dull the blade, but oxidation, corrosion or rust will.
One blade should last you years.
Why
anyone would want to use those multi-blade behemoths is beyond me... I use a cutthroat razor. It takes a bit of time to get good with the blade, but the shave you get is far superior to what you'll get from a Mach 3 or a Warp 7 or whatever other speed-related moniker they use these days to market razors.