She isn't a bad pinstripe in my opinion, but I am not a fan of dark pins. I prefer high gold ones. I do like that long stripe down her back. That is something I look for, personally. I also look for either an aberrant reduced pattern or a very uniform busy pattern. Beauty is in the eye of the beholder, though.
For her I would probably pay somewhere in the $150-200 range due to her size and my preferences.
Edit: Reduced patterns are just that, reduced patterns. Likewise a busy pattern is a lot of patterning. Basically we are talking about the amount of black "pinstripes" she has.