http://news.ycombinator.com/item?id=1396541
I'm specifically looking at providing a video-based training service for a very-well-known vendor's product that many companies in this sector use. Not really a technical challenge, more a knowledge transfer challenge.
In my specific case, the choices available are to either go to the vendor and pay more than 100k to get all the training for 10-15 people simultaneously, or to find someone who's been through it already and mind-meld. I've found one other group who is doing something similar to what I'm thinking, but their offering is laughable (machine voiceover!).
I believe I could easily charge 1k-2k per month for site licenses of well constructed materials. Maybe quite a bit more, especially if I offer custom materials for clients. The foundation would be shared across all though.