So, my collection's grown pretty rapidly over the last week, and I now need to stop bringing them home because I've got more cameras than photographs right now!
The SX-70 I found on eBay proved to be pretty much junk, has all kinds of problems... such as failing to eject film, "gummy" focus and L/D wheels, the taking mirror got stuck once, and the inside of the lens is filthy. Good chance it will be back on eBay by next week.
Alas, I've already brought home its replacement, which is in FAR better shape and got it, too for a steal!

It also came with an ITT Magicflash, which I just need to clean the battery terminals on for it to work.

I also got three from a friend who was just wanting to get rid of them:



The last one is a 700 and is from the late-50s and is VERY NICE! The case included an unopened roll of film that expired in 1960, flashgun, bulbs, an exposure meter, and film coater!