The Internet is a knowledge resource. We realize that other media are more easily targeted such as the Yellow Pages but by referring a yellow page ad to the website the professional will have an inexpensive way of providing more information.
Price is important, but remember price usually has a direct correlation to quality.
Find out what their website address is and take a look at their site and their client pages. This is the biggest clue as to the quality of their services. Also be sure to find out if the page creation fee is a one time charge. Buy your site, don't lease it. Alot more vehicles can travel on a four lane highway than on a one lane country road.