Well, even if the assets look simple, I can say that I spend quite some time on the packs I release, and also I don't receive the full 5 dollars in the end, as a portion of that goes towards platform fees and taxes. Maybe there will be a discount later, but for now I think it is a reasonable price.
the price is reasonable, and your assets are awesome, I simply don’t agree with placing a CC-BY license (that makes crediting mandatory) or something that the user paid.
I follow a simple philosophy where, I already provided you value with the 5 bucks, and you provided me value with the assets. Sure, that crediting is a small thing, but not every developer likes it.
I think that CC0 goes well with paid assets