At home I use a couple of small timers for several task. I needed a battery for my timer.
I looked at several local stories for the small button sized replacement. I couldn't find any in town. I turned to Amazon and found several suppliers who would ship me a card of ten for no shipping fee. Total cost? $5.86.
In two days I received a small box of 200 batteries. I paid for 10. This started a one hour text messaging excursion with the company located in another state. Yes, there was a mistake, but the warehouse was in Austria. Thru Amazon we discovered that the batteries were not returnable. "Just donate" them to a charity they told me.
In my photography business, I strive to make things simple. I usually can find several ways to make jobs run simply. Easy, not complicated.
Trying to replace one small battery illustrates our dilemma in modern times. Something that should be so simple, grows into a monumental task.