Graphic design requires a creative expert. There is a major difference from a $25 logo you purchased from an online site and one that has been customized for you and your businesses. Good graphic designers will know the best approaches to communicate your products and services to your customers. They will know what your competition does (because they will research it), they will take your preferences into their mind and then come up with a number of creative solutions to get your message across. Most importantly they will develop the logo/art in the proper software so that it can be printed by any printer. Designing anything in Microsoft Office is not going to go far when it comes to printing your projects!