On Tue, 26 Jan 2021 16:52:59 +0000, Bob Eager wrote:

snip

I bought a cutter sharpening kit that I use every 3 months. No other
outlay.

Does the sharpening kit work well? Which one did you get?

I've decided that rotary rather than linear shavers do a better job on my
face. I've gone through three in maybe 12 years; when they start getting
blunt the replacement cutters cost almost as much as a new shaver.

If the sharpening kit does a good job I'll give it a go.