With a website your pages/adverts can tell the world about your business, your product(s)/service(s), special offers etc. It can carry much more information about your products/services than a printed brochure.
If you do not find it cost effective to have a well designed printed brochure perhaps because your prices or specifications change frequently then you may find it more economical to have a website with all your latest prices.
You can send out less printed matter. If an enquiry comes by e-
Your enquirer will see your information while they are still interested rather than waiting for up to a week for the Post Office to deliver a sales letter or informational brochure and therefore go off the boil.
Low priority enquiries can safely be dealt with by your website which will cost you nothing. You can have a detailed street map showing your customers exactly where you are and therefore where to find you for that personal visit.
Your customers can download product specifications/manuals in PDF format again saving you money and at the same time letting your potential customers get the information they desire quickly.