I have a 6 year old Das Keyboard. Half a dozen keys around I have failed. I cleaned them with a spray which helped for a while, but I think they've just worn out. Before I chuck it in the bin I wondered if someone can use it for parts or wants to try repairing it.
It's in ok condition for its age, it's fairly solid, and most of the keys are fine. You could probably take keys from the numeric keypad and put them in place of the faulty letters.
If more than one person wants it, it goes to whoever will take it with the least effort from me. Ideally Wellington based, collecting in the CBD. I probably can't be bothered posting it. Most likely it'll just be chucked out.