The Color Pack II is a in the family of rigid plastic body cameras that were made as cheaper version than the Polaroid 100-400 series cameras that had folding bellows. This camera was first produced by Polaroid in 1969 and was discontinued in 1972. The original cost was right under $30 making it very affordable for the everyday consumer market. You can find these cameras relatively cheap online and in thrift or vintage shops today. They are somewhat old so their shape is always questionable.
Some of the first things to look for in a Polaroid Colorpack II Camera is if there is any corrosion in the battery compartment, which you can check by opening up the camera from the back. There is a metal latch that you can pop up that lets you open it up. Small amounts of corrosion may be cleanable, but I have seen batteries that explode or leak and then corrode entirely making them impossible to even take out of the camera from the holder. I would definitely pass on these if you see this is the case, they are unusable. Since Colorpack II’s are also almost entirely made out of plastic I would stay away from ones that are cracked or chipped. Any small bump or fall can then cause the entire camera to come apart.