Average cost of website developer?

[Belle]

I'm familiar with HTML and CSS, but not Java or C++. I do not want to build a website on Flash, because Apple mobile devices still don't support it.

1) How much would it cost to hire someone to build a website (in Los Angeles)?
2) How much should it cost?

I tend to use eLance to hire. I want to provide a budget that's respectable but not ridiculous.

Project Details:
- The user enters the site to animated entry (e.g. door)
- User signs in
- A character will act as a guide speaking to the user and providing information (actually speaking with audio)
- User will walk down a hallway and enter rooms
- The rooms will have animated content
- The user will be quizzed on the content
- The user answers correctly, they leave the room, walk down the hallyway and enter another room
- The user completes one level, the enter the elevator again and moves up

I would create all the animation needed.

Thanks!