I've been a faithful film photographer for many years and I'm thinking about stepping it up and going medium format. I'm looking at Flexarets, Minolta Autocords and Rolleicords. It's unlikely that I'll be able to find such cameras at a store within my price range (it tops-out at $200, being a student) so I'm turning to ebay. Unfortunately, I've got no experience purchasing from this website and I'm curious about people's experiences buying older cameras off of it. It's hard to tell whether or not $150 for a fully working rolleicord is a deal too good to be true when the next seller on the list is about to sell a semi-functional one for $700. Any advice?