depends on your experience. I charge $60 per hour for Flash, $40-50 an hour for html driven. I've been doing web for 5 years though, and I have a BFA.

Inexperienced, I should say $20 to $35 depending on your productivity and knowledge. You simply cant charge $50 an hour to create a simple HTML site in 20 hours. If it takes you 10 or less, then maybe.