Deciding whether or not to hire professionals always depends on your unique situation and personal background. Take the time to analyze your own writing strengths and weaknesses. If you fancy yourself an expert writer then the answer would obviously be to give it a try yourself to see how you do. If you consider yourself to be a poor writer then it would probably be better for you to hire some professional help. Writing quality ad copy, text descriptions and page content that converts traffic into buyers is certainly a fine art. It takes time practicing and talking to your audience before you can really begin how to write for your particular audience.
The content portions of your site are very important to your visitors, current customers and even search engines. By using your primary keywords or phrases in a way that sounds natural to your potential customers throughout your content including page heading, product names and descriptions you will also attract the attention of search engines. In turn, you have a better chance of ranking for your primary keywords when potential customers query keywords on search engines like Google. Make sure you habitually use grammar and spell-check programs to be certain your copy sounds good and looks professional as spelling and grammar errors look bad to users and search engines.