It’s a well-known secret that inkjet ink is being kept at artificially high prices, which is why many opt to forego ‘genuine’ manufacturer cartridges and get third-party ones inst…
Straight razors- bought a pack of blades years ago for change and have yet to run out
Aeropress or V60- especially with beans, after an initial investment of ~£100, you can buy the cheapest beans in bulk (freeze to last) and still make better coffee than any shop
Not using consoles
Oh god, what's the issue with toothbrushes?
Switched to Kobo Forma when kindle got ads, love it
Replacement electric toothbrush heads run on the same scheme as disposable razors with high margins and vendor lock in. I’ve also seen vendors (Phillips) change the design to force you to buy another base station/brush.
Get a safety razor. I got one a few years ago and it's been amazing. The blades are much sharper (or at least feel that way) than the modern 4/5/6 bladed thingies, last longer, and are like 20€ for a 50-pack.