The implication here is that you've contracted with somebody to do this for you, but they haven't delivered. Is this correct?
If this is the case, how far did they get? Did they produce something, but just didn't put it up on a public site? I kinda get that idea. Or a friend or relative or employee who said "I'll do that for you!" and then didn't come through?
Dreamweaver sells for about $400. Most websites cost considerably more than that to have developed. I'm just guessing here, but did you contract with somebody to produce a website at an unrealistically low cost? I find it kinda odd for somebody to be "considering doing it themselves" after an apparently bad experience having somebody else do it for them, and then balking at $400.
(You don't need a $400 product to create a decent website, however. There ARE plenty of more-affordable choices.)
Give us a bit more information, and maybe we can do a better job of pointing you in the right direction.
What's the purpose of your site? Sounds like it is for an existing business? Is it for people to get online information about your business, to buy online, something else? Perhaps you should be looking at hosted solutions rather than developing your own website. For example, it's pretty easy and inexpensive to set up a site to sell online using Yahoo Stores, etc.
In any case, I sense there is a backstory here we are not getting. Fill us in, and we can probably be more helpful.
(WebmasterWorld gets a lot of "how do I do foo" posts where I suspect that the conclusion that the poster needs to do foo may be premature. I like to try to ferret these out. :) )