Why would anyone buy the Show Pony Shadow Box with 6 shadows when for a few dollars more (well $18) you get 18 shadows in the book of shadows? Is it just me or do you think that it would be sill to buy it too?

I totally agree with this. I honestly don't see the draw on Show Pony and I love UD. and like you say, for a bit more you get ten more shadows and an extra liner.