A good site is the best business card! All information about your business, brands, notifications can be published in the form you want. Your site should be very presentable a good medium for your customers to easily reach you and get to know you Your business. A good site for you can collect information about visitors, yours future users or customers. You can also notify them later news, promotions, etc ...
Time of site development varies according to your requirements. It usually represents the process in which it is needed pre-define your requirements. The site development process itself can take from 7 to 15 days days of defining requirements, your needs, desires ...