Ask yourself this: Is that stack of money how much it will cost me to have a website, or how much its costing me NOT to have one?
So how much does it cost? It depends:
Are you having a brand new website designed?
Are you upgrading an existing website?
Do you intend to accept payments on your website?
Do you already have a domain name registered?
Do you already have a host for your website?
These and many other factors affect the cost of designing a website.
Are you able to maintain the website once it is launched?
Will you need support to modify catalog entries or change prices?
Do you know how to add new products or services to your website?
Can you modify your website for seasonal or holiday specials?