Answer: It is relatively easy to set up a Facebook page for a business.
That said if you are uncomfortable doing so the fee should be relatively inexpensive, depending on what you want done, to get the page set up and ready to run.
Some things that will impact your price will include whether you want graphics made or you already have them, how advanced you want the page to be, etc. Are you looking for something like the Dell Facebook page http://www.facebook.com/#!/dell
Or are you looking for something simple. As a simple page I’ll show you the one I run for my current org http://www.facebook.com/#!/PABar…
It can get even simpler, of course.
If you want the relatively simple you can probably do it yourself or have someone set it up for $500-$1000 or so. A more complex page could cost quite a bit.
As far as managing the page, again, it depends on what you want. It will probably be difficult for someone else to generate content for you, unless you can develop a process to help the person do so. For example, do you have specials you plan on offering, something on your website that is constantly changing that could be the basis of your content? You could arrange to post that yourself, or hire someone to do it.
If you just need occasional tweaks to the page you can expect to pay a consultant’s hourly rate (which can vary greatly) or pay a lessor hourly rate if you have a guaranteed contract for a certain number of hours.
As far as creating ads, it isn’t that difficult but if you just don’t have the time or aren’t comfortable writing copy, it will depend on how many ads you want and how much monitoring you are expecting.
As far as generating members, that is going to take some cooperation between you and the consultant to identify your likely target and the best way to get those folks to “like” your page.
Pricing is never easy to answer without sitting down with a business owner and finding out what it is that he or she requires.
Your best bet is to find someone who works in this area and ask for an estimate after you have a good conversation about your needs.