If it is older French, then there are things such as threading issues and some other parts anomolies that might come into play. Otherwise, price is o.k. for the type of bike. Depends upon condition. I assume it fits you? Are the wheels alloy? Can't see the parts very well, but the derailleurs would be another issue. Are they functioning? Are they Simplex or Huret, and what vintage?
Seller says "great shape" so if he is correct and it fits, you can't go too far wrong if you are just looking for a basic rider.