When we were looking, I was intrigued by an outdoor kitchen but after looking at them, I decided against it. I found that the grills and stoves where pretty low quality, and many of the sinks were not plumbed into the grey water.
We went with a camper with a larger storage compartment there, and I keep a folding table there, and set up a grill, and stove on the table, and can set up food in the compartment. Make a nice L shaped outdoor kitchen, with better equipment.
I keep thinking of putting a small fridge in there, but have not gotten around to it.