Going to quote a recent post of mine regarding an IRL name for the sake of comparision.
I believe Robin isn't as common as Brendan for example, however Robin is an interesting name, because AFAIK it's both given to men and women. I wouldn't give it an extra value because of the in game item which is often referred to as Robin or because of Robin Hood, but I would give it something extra because it's only 5 letters and a 'smooth' word and because Robin itself is known, but an inferior charcater to Batman. However, I see much less potential in Robin compared to Brendan as far as real life names go.
Robin - 180-230m 07