Having your own website created does not have to be expensive.
A simple website displaying a page of information can cost as little as £200 to set up plus an annual hosting charge of £50 for as long as you want to keep it up and running. 
This compares very favourably with other forms of advertising.

In addition you will need a register a domain name (eg www.mybiz.co.uk). The charge for handling domain name registration is £20 and it will last for two years after which time it will be necessary to renew the registration. Click on What Next for further details.