Once the website has been build and put live it should attract more links and rise in the search engine rankings naturally over the years, therefore its going to be an asset of your business that will continue to deliver 'free' advertising. After the first year you will only pay a hosting fee (approximately £3 per month) to keep your website live, compare this with the advertising rates in Yellow pages and the Phone book where half page adverts cost £2000 or £3000. Sure you will agree this sounds an attractive advertising proposition.