+1 james.....when I first started the hobby, I scoured for fish I wanted to get, and the mandarin was at the top of my list...but I held off on getting one because of the pod thing.
If you really want one, aside from buying supplemental pods, you can make an in-tank pod refugium by take some live rock, covering them with some kind of plastic mesh, so pods can grow without the fish bothering them, and of course, they will crawl out and feed the fish. You can even hide the meshed-rocks under more rocks. As long as they're given a place to safely populate.
If you're lucky, you might find a mandarin that also eats mysis --but they're hard to find, and before you spend on them, insist that they feed it mysis before you leave the store. If you don't see them eat it, I'd leave it.