Doing business over the Internet has no end of benefits, such as ...
... but perhaps you know all this and have already made the decision to "get on the 'net".
You also need to consider how a new website will integrate with your existing business model. You probably don't want to duplicate information in several places, so might consider moving the entire operation online and use a browser interface to manage stock, orders, customers, etc.
Whatever it is you're after I can probably help, so now.