Hey, I've been doing web design/development and online marketing for the past 5 years. Most of my work is more mainstream, however I have done several adult sites with the latest being http://rihannalerone.com.
If you're interested in having a new site created for you or having your current one redesigned, just shoot me a PM.
If you're in the NYC/NJ/CT area, I can also secure discounted rates at 4 and 5 star hotels.
... with that said, none of the sites I create for providers have taken more than 6 hours with the average being around 4 hours so the final price typically ends up around the same price as those that charge a fixed rate or a lower hourly.