I am a sound creator and I used to make 'sound sets'. These are pretty much sound files which all link to the same thing. Eg, robotic, realistic or song of choice. I was wondering if these could be an official thing? If you are willing to make of official, here is what classifies as a sound set. Or at least what I made up when I created sound sets.

Cheap: Kiai + All Hit Sounds
Average: Kiai + All Hit Sounds + Grip
Expensive: All Sounds

The price can also vary on the quality of the sounds.

Would they not add up to make the same price?

What do you mean?

Why should this even be a thing, would good could possibly come out of this being a thing?

A much more organized way of selling multiple sounds. Noting bad can come out of this though.