I've participated in the clinic at Herbert Wells Ice Rink in College Park, Md. the last two years, and it's been great for me. My game has come a long way thanks in part to some very good coaching at that clinic.
The best part is that it's only $15/session, or $90 for 6 weeks, and there are three 6 week sessions each winter. Classes are long, from 7:45p to 9:45p, so it's a very good deal. First session is skating, second is passing and shooting, and third is team play.
I have not taken the Reston clinic, but know some of the guys at that rink and they cannot say enough good things about the guy that runs those clinics. They've said it just in discussion, knowing I'm not going to take it so they arent trying to talk it up, but just a true respect for the instructors there.
I hope it works out to be true for you. Please report back after you've taken it.
The clinic in Fairfax was $140 for 7 sessions, so that is $20 / session, but each session was only 40 minutes long. So after warming up, you really only had about a half hour left, that's why I felt it was a bit lacking. It was very fun though and I met great people.
I'll let you know my opinion on the Reston hockey clinic once its starts in May.