I feel your pain. I am building an outdoor kitchen on my deck as we speak and the built-in models are not cheap. I assume it is mostly due to less demand. Although I think most of the built-in models are constructed to be a little less disposable than some of the free standing ones. I ended up getting a Napoleon Mirage grill. Price point was good and they seem to be quality units.

As far as grease goes, since mine is built-into a cabinet I am not as concerned, but my grill came with a grease tray under the grill that catches the grease. You can slide it out and clean it when it gets too gross. I have not even used mine yet, as I just ran natural gas last weekend to my island and I am still trying to get everything constructed so I can't offer any first hand experience at this point. Good luck.

Riles