I just received a county com aa battery locker
it is very nice
I already have the aaa version
I also use one of their PicoXL capsules as a 16340 battery locker.
I agree they are expensive, and would also be interested in an alternative, but have failed to find one, so far. I prefer transparent options.
Since I have started using 18350, I bought a couple of these
I prefer the countycomm capsules, but they dont offer 18350.