How to create a combination based on item quantity?

[NILAGolf_]

So, hopefully you will get the point:

 

In short: I am selling used golf balls. I want to sell packs of 12 / 24 / 48 / 96 balls. Is there a handy way of doing this with the combinations or do I just need to do a different sellable product for each pack? Meaning that do I need to create products e.g. Ball1: 12pcs, Ball1:24pcs and so on. This is not a really good way and it messes up the stock also, really hard to be aware of the real stock situation with this way.

 

So If you have a solution, I would be grateful.

 

Cheers,

 

NILAGolf