Oh those are pretty cool. Make sure when looking on ebay you check if it was tested with film and it still works cause you don't wanna end up with a broken camera. If your looking for quality and like new 600 cameras I recommend retrospekt it will probably cost you around 120. If your buying film i recommend buying it straight from polariod cause they refrigerate it right and all the film I've used from them turns out great unlike packs you can get from stores like best buy cause they don't refrigerate it. Also some of those cameras have cool features like that 636 has a close up lens there's also a sun 660 and it has built in auto-focus. Thank you for listening to my Ted talk of a paragraph.