If I were in the market for a bike, and it was my size, and it is in good shape, I would think $100 would be a good buy. $125 wouldn't be out of the ballpark since it is cromoly.
I was outbid on a Le Tour IV (1020 tubes) at about $150 because I wanted the specific model and color, so yes, $125 for a cromoly Luxe sounds OK to me.