I've just bought a vintage keyboard from ebay - works perfectly. I'd be using it right now if it didn't desperately need a clean (job for later - no, it's not going in the dishwasher).
So how they are managing to make so much out of peripherals, I wonder? Maybe because everyone nowadays makes them to break irreparably almost the day after the warranty ends. Or worse, puts a one-way "recycle" setting on them and makes it way too easy to click...