I had a single Ultion Eurocylinder in a door and was planning to get several more, keyed alike, for other doors around the house. The price put me off, as well as the unfriendly ordering process (you can't just order online even if you've registered your ownership details) and the incompetence of the local high-street supplier who took all the details and failed to ever get back to me. I got a bunch of Avocet ABS cylinders instead. Cheaper, even allowing for the "wasted" Ultion cylinder, easy and smooth to order online, easier to re-order with the unique cylinder code. Happy with them all.