When buying polygon toppers you need to make sure you get one that has the controller in it. They are sometimes sold without it, which makes them pretty worthless since you cannot light them up without the controller. That is what makes these polygon toppers more expensive. Expect to pay more than $75 for them if they have the included controller. I have seen them for $40 without controllers, but like I said, they won't light up without it, at least not with the special led RGB patterns that make this topper special.