A complete waste of time. This is a glorified printer for pictures you already have on your phone or handy internet-compatible device. Props to them for situating themselves on a foot-traffic-friendly section of the Strip, but whoever named the upstairs portion a Polaroid "Museum", clearly doesn't know the meaning of the word.
$5 is cheap, but I'd rather buy five gas station hot dogs than pay that for the tiny room I browsed with basic photos and a display of cameras. I'm no professional photographer, but I've been to a Warhol exhibit so the featured prints were nothing special- nor would they be to anyone who has seen a documentary.
As for the cameras on display, I own two off them.
I find this place to be a waste of time. Unknowledgeable staff hellbent on upselling, and it's basically just a print shop. Not even a quality one at that.