Buy business web template with total customization option. You may get layouts in the market designed superbly but with little scope of customization. On the other hand if you go for open source developments like the Drupal, Joomla or others then you should buy layouts designed for particular themes. Otherwise your developers or the designers will face problem to make layouts completely fit for your business. Even in SEO related changes there will be problem.
Hope you have understood how should be every business template to make any business site successful. There are hundreds of template shops who sell these types of layout. You may even go for a freelance service with your ideas of the design. Just keep the above features in mind and make your business web template a beautiful one to look and use. But to get these features you should not spend so much money for sure. If you search the internet you may get the idea about what should be the affordable price for you. Finally buy or design an excellent business template and make your online presence really successful.