Built-in grills
prices on 3 models— devices designed to be built into a kitchen set, countertop, etc. and not intended to be installed independently. In fact, they are a special kind of stationary models (see the relevant paragraph): they do not imply “traveling” use and frequent movements from place to place, even if the product is installed on a cart with wheels. In addition, most of the devices in this category are gas grills (see "Fuel (source)") that can be permanently connected to the gas mains.
Anyway, a built-in device can be a good option when equipping a stationary barbecue area — in the yard under a canopy, in the kitchen of a cafe / restaurant, etc.