Why is it that my damn Elos calcium kit is already out of one of the components?

Have you ever counted the number of test you get out of the box and see if it matches up?

Why is it that the test kits seem to always be miss proportioned? You never run out of everything at once? I have plenty of everything else but not A?
I am sure its more well thought out than that. Probably so that you don't make an error on a test and kill everything.
But damn, make refill kits or something. Thirty bucks for another one

Well thanks for listening and letting me vent.
Anyone else........