OK, I seem to have 3 options that jump out at me.
1) My dealer can sell me the sidekick grill and bumper mount for about $215. I'd have to remove the grill from the bumper in transit. My dad has a sidekick on his camper and I like it. It's only been one season but I think it cooks good. I was surprised.
2) Get a Weber 100 with the cart for about $200.
3) Get a Weber 220 with a cart for about $250.
I'm leaning towards option 3. First and foremost, it's a Weber. The 220 is larger then the 100 and it also has a shelf on each side of the grill. That is something that is lacking from my dad's sidekick. When I cook I don't know where to put the tongs when I'm not using them.