How I can separate my asset to several parts on AssetStore?

Hi, I'm working on big asset, which contains different systems, and here I have an problem.

Asset contains "Core" and several systems, which can be added and removed easily, and to not make price too big, I want to allow customers to buy only "Core" asset, and additionally buy only systems, which customer will need. For example, there 5 additional systems for asset, but user want to buy only 2 of them.

So, I can separate it to several assets, but non-Core systems can work only with core asset. Do Unity Asset Store allows to sell assets, which will not work without buying other asset? And should I mark these assets somehow?