Don't see that it's a Gitane. Those seat stay caps say something else - LeJeune? someone on here will know. But it looks like a 70's and that means possibly French sizing and threading. Nothing to be scared of, just aware of.

Forged drops on a French bike from the 70's usually indicates that it was at least 3 tube 531 or one of the better Vitus tubesets. Not necessarily overpriced at $120 if it doesn't have issues, but not a giveaway, either.