Dj - you did a great job explaining what can be done, and what expectations to have based on the experience and skill the photographer has. It isn't always "you get what you pay for", since I have seen expensive tours that didn't inspire me at all. Find a photographer, look at their work, get competitive quotes, and you should be pleasantly surprised at the level of quality and service you can get.
It's great to see so many people looking to add virtual tours to their listings. I am a VR photographer with 18 years experience in the field, so I am a "little" biased... I've used AirBnB a few times as an end user, not listing my home, and really wish I could have seen virtual tours of properties, since it really does put you in the room more than any video or still images can.
Mark