Depending the site design it vary. If it is something complicated, you can charge $40+ per page easily. However, make sure the client's budget on it. If you are not sure how much, go someone experienced and ask them for a quote. Even if you want to use them, you can still make a handsome portion of money and get it done by the specialized people with less cost. http://goo.gl/pR1NLT

In my experience I am charged per page. $50 a page with a set up fee of $30-60.... you can always offer a monthly maintenance fee too

Maybe estimate how much you'll charge per hour, & then figure out how many hours it'll take, & then give it to them as a fixed price, so they don't think you'll work slowly per hour or something.

I've gotten a request from a client to build a simple 4-6 page website. For the most part it will be a static site, except for one page which will have a booking system. I plan to build it with an existing theme/child theme on Wordpress. I'm ready to take the job, but I'm not sure how much to charge. Should I charge per hour or a fixed price. How much exactly?