How much does a website cost? Real world website costs vary from free to millions of dollars. The price will depend on whether you want a basic informational site, how many pages are need, how many different page layouts, is there a store, is there custom functionality, do you require a site that you can edit yourself, do you already have a logo, etc.
The best answer I’ve seen so far is this article. They survey 40 web designers, and give the results in price bands. The short answer is $3,000 to $5,000 for a custom designed site. Responses ranged from $500 to $1000 to over $10,000.