I'd say you have a good eye for pastels, because those are really nice. Personally, I believe the het ghost enhances the pastel appearance, but I don't have any proof of that, just what I've noticed in pictures and a couple I've held over the years. They're definitely gorgeous, and pastel-ghosts are really beautiful. That pair looks to me like it has great potential.

Folks may agree or disagree on the $600 price tag, but everyone has their cut-offs on what they consider a "good deal". If I were in your shoes and in the market as you've described, and if I could afford the $600....I'd go for it and be very happy to do so!