It depends greatly on it's purpose and any special functionality that may be required, a simple information or portfolio site can probably be created with the popular Wordpress blog platform. perhaps using a commercial design theme to give a more professional appearance. Web developers will charge hundreds or thousands of dollars to create a site from scratch, though typically the operating cost for a moderate traffic site is $8/mo for a shared server. One source of pre-designed site templates which can be a labor saving starting point is templatemonster.com you still may need the assistance of a developer to tailor the site but using one of these templates can be a great cost saver.

Depends on features and size. Try ultimatewb, it's very good. It's a website builder and there are also web design packages there too if you want your website designed for you.

It depend on the design of website as well as designer that how much efforts he put in the website.As if you want you can design your website from one of the famous web development company at a very cheap rates.

it depends on various factors like complexity of design, nature of web site (informative, dynamic) etc.

Of course, it depends on requirements. Try one of these..these give quality work on a best price

http://www.blueoceandigitalagency.com/

http://bodm.co.uk/