How many...?

I don't have a specific count... 1500 or so?

AAAs get the most use in tuners. We use a lot of AA's in wireless packs between director mics and our wireless gear. Probably about 200 of those a year versus 1000 or so on the AAAs.

Price matters, but Amazon Basics have been reliable. Kids tuners last well with them, and they're cheap enough that I feel no guilt flipping them on wireless gear before every contest.

If you're trying to start a business on this - I don't recommend it. There is no way you're going to figure out a profit margin that will beat the model Amazon has. I am not alone in ordering their batteries - our audio guys we bring in once a year also swear by them.

We're a small 3A HS program, so this is 6-12 usage.