Without traffic and customers, you have no sales.  A beautifully designed, perfectly optimized site with a professionally designed logo still makes zero dollars if no one knows about it.   That’s why, early on, it’s so important to focus on marketing over nearly any other aspect of your business.  Are design, conversion and honing your sales message important?  ABSOLUTELY.  But focus on them at the expense of marketing early on and you’ll suffer.  Don’t be one of the thousands — if not millions — of people who have launched sites only to have them die a slow, obscure death because they didn’t prioritize marketing.  You know the guy who said “Build it and they will come”?  It turns out he’s broke.