Note that Polaroid 600 DOES NOT EQUAL Polaroid 600SE. Totally different cameras, and the 600SE will take the Fuji pack film.
Also note that the 600SE is a highly-priced special purpose camera that is based on the near-identical, much cheaper, and far less limited Mamiya Press Universal. Pass on the 600SE and get a Universal IMO. You have more lenses and accessories to choose from, and you can shoot either film or instant prints with them.
"Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."