Sound pack upload

Is it allowed to upload a “sound pack file” of items that are already in my portfolio? Like a music pack, but it includes only sfx.

e.g. I’ve uploaded five separate items of a dog barking and each one costs $1. By including them in a public collection, the final cost would be $5 and it wouldn’t be convenient for the final customer. Can I upload a file including all the 5 items and sell it for $4?