Read your condo documents. However, in the condos I've owned, you cannot buy and sell limited common elements. Those (as you know) are elements/areas available only to you, or to a limited number of residents, but which are common elements, and thus owned by the condo association. While you're receiving a right (usually an exclusive right) to use them, you don't own them.
Again, though, I'm not a lawyer and I don't know what your condo documents say. But I'm quite confident that your condo documents (which very likely will address the subject) will not allow you to buy or sell limited common elements.