<< Anyone know where I can buy a portable AC unit that isn't a window unit? What is the cost range of them? This is just going to be for a small dorm room. >>
Free-standing units. Blows, cool air, but WILL NOT cool the room unless you duct it to outside since it will be excreting the heat+the motor heat into your room. Actually it will warm up your room.
Split unit. Very expensive and requires a professional contractor to install it.
Window unit: cheap and it actually cools the room.
One thing to keep in mind is air conditining doesn't "create" coolness. It simply carries a heat from one point to another. You'll have to drill a hole in the door or a wall and dump the heat into: hallways, adjacent room or outside.