Last November I replaced both valves in me kitchen mixer tap, quarter turn ceramic type because the cold side was dripping. Hot side was still ok but changed as I had bought a new pair. Anyroad up the new hot side started dripping a couple of weeks ago. So instead of buying more new valves I clicked and collected a new tap of identical type from Wix. As an experiment I decided to replace the old hot valve (kept in spares box for matching in case of need to buy a replacement again). As luck would have it I found a brand new still in packaging valve which has been lurking in my plumbing spares for at least a decade. And fitted it. And it works
. Next time it starts dripping I will fit the new tap.
