It`s targeted: Targeted advertising means that the adverts reach people who are likely to want to read them. This then means that the advertising is far more cost effective as it is reaching the kinds of people likely to want to use it so that a greater number of the people reached are converted into sales. However nothing is targeted quite like a website as anyone who comes to your website will have either followed a link there, typed it in, or searched for one of your products or services. This then means that most people who come to your site are going to actually want to be there and so any marketing you do from here on in will be more likely to result in sales.
You can sell products directly: You can also use a website design to sell your products directly. If you run a shop for instance or sell items, then you can turn your website into an online shop. This then greatly increases the number of people who will see your products for sale as they can do their shopping from the comfort of their home rather than having to actually travel to a store.