Is this common?  My wife seeks a bi provider because we do not wish to trial and error through the swinger scene.  
We are green to say the least.  
Any advice is appreciated.

Very common ... many providers are very happy to be with and do couples ... just find a few providers in your area and ask ...

Where are you located? Others may reply with recomendations if they know your location. Many providers have rates listed for couples on thier websites. Ideally you can find a review posted by a couple. I would take the time to check the sites and verify with reviews. Doing homework for two sounds like fun, although not as much fun as the final exam lol. If your in chicago then contact Bebedoll.