I just walked out of one of our bike shops. They have a light blue Gitane (possibly mid'80's) that they want $200 for which includes a tune up. I couldn't get a photo but the tubing says 788 and appears strong. The front and rear deraillers are Simplex with 7 gears on the rear with downtube shifters. It has spoke protector on the rear which maybe indicates it wasn't a higher end model??
I know it's not a lot - but I don't know much about Gitane's and don't know if this would be more trouble in the long run (ie french threads, etc.).