$50 is a complete steal on these - as long as they are in good condition of course. BriP is totally bonkers about Romeo 2s. Maybe drop him a PM to ask his advice on what to look for condition-wise?
It is a great deal on them. From the picture it looks like the right side (far side in the pic) might be a little loose which could mean it needs a tuneup, they look wearable though. Nice pair. If you get them and aren't happy with the look let me know, I'll be interested in taking them off your hands.
They look legit from the pics, the Titanium model of Romeo 2. But watch out for fakes. Earstem ends are warped on most if not all fake Romeo 2.0s. Compare with actual Romeo 2.0 pics.