The competition in this area is stiff.
But heck lets face it if you bring a cool and somewhat unique top out here and it will sell.
bring an ordinary allebit large top made from pedestrian aluminum and it's an instant fail.
Just about any point of view should lead you to the fact that aluminum is not a good material for a whole top. Parts of the top yes the whole thing no.
There are way too many available bearings to be using a stainless steel bearing. Come on now. Make this top from copper offer it with a ceramic bearing or a ruby ... maybe more tops would sell. It should be scaled correctly
This top is too large to be a good spinner in copper. This maker needs to do more research.