We did a private charter with them at end of July...they had done a CO trip the day before. We talked to a number of people that had been on that trip and they all were very happy with them. They had a per person rate, but I didn't ask what that was.
Email Zuzu...she is very responsive and will give you whatever details you want/need. She is also active on several of the SXM focused facebook groups if you do facebook.
.
