I do this with my child. Shrug, I just buy more amazon rechargables and while it feels expensive its still a fraction of what buying non-rechargables cost over time.

The only exception is his collection of lightsabres. Its like 3 AAA per and he and he has 6 or 7 of them, maybe more. So for those I bought a pack of alkalines and forgot about them. I needed batteries and just bought them from CVS because I was in a hurry.

Amazon lists the EBL 20 pack of AAA batteries for $22. This is about $8 more than the alkaline pack I bought. Now I regret not just spending a little extra for rechargables because those alkalines will drain and leak sooner than later. Or the lightsabre will break then the batteries can go back into rotation.