I use it for chicken & even a turkey, but I've seen others use it for a variety of other cooks.
After I started using it, I've wound up using it for maybe a 25%, or a bit more, of my cooks. Typically, I'll have a basket on either side and often throw some potatoes wrapped in foil under the birds (I usually cook 2-3 chickens, depending on the size). Other times, after the chicken has been cooking a while, I'll throw some sausages or burgers underneath the birds so they also cook indirectly. I'll usually throw them over the coals at the end.
I haven't done beef or pork on it yet, but will give it a "whirl" when the weather gets nicer.
Depending on where you are located, you might be able to pick up a used rotisserie for significantly cheaper & if you are lucky, you can get one "free" with a used kettle purchase. If you are not in a hurry, just keep your eyes open for opportunities. Even if you pick up just a rotisserie ring only, you can often pick up a used (or new, but for a no longer current model) motor & skewer for a gas grill that you might have to modify a bit to use (just make sure the skewer is long enough for the roti ring).
I've seen the rotisseries with rings for $80 to $100 locally used, but I always guessed that is mostly someone who bought it with a grill & flipped both of them. I've gotten one complete one (older tabbed style) but with another brand of motor when I bought a grill & another ring only with another grill. Picked up a cheap NIB skewer & motor to use for that one.
I am thinking of getting one, so, how many times in a month do you use it? Beside Chicken, what type of meat using your rotisserie?