Board Thread:Tapped Out Help/@comment-121.75.58.193-20151107020514

I was reading a discussion about earning cash, and someone commented saying that premium decorations help increase the income, and I always see this in the info box of the decorations but I just don't get how it works that the more premium decorations you get the more income you get ??? It's a bit confusing, would anyone please care to explain? thanks 