I did a fit session with Hello Velo as well, did a 'bio-mechanical' assesment, basically 6 or so stretches to determine my flexibility, then 3 or 4 seperate measurements to determine size.
the staff member (can't remember his name, but I think he runs the place) took the information and sat down with me to review a couple of bikes that I've been considering for purchase. he made some recommendations, which I have since used to order myself a bike.
I'll be going back in the spring for a session with them again to actually make the bike I bought match the measurements that we took this fall.
I'm rather happy with the service, they feel like a very road race focused shop, but he was happy to talk about what he was doing, and looking for in relation to my needs (commuter).
total cost for the two sessions (stated as an hour each) was $75.