What licensing if needed for startup?

SamskaraSamskara subscriber Posts: 1
edited December 2013 in Business Planning
About the business: I live in Washington, and am starting a business online. I'll be selling several variations of a particular product that retails about $5. I'll be starting very small at about 20 items, and just work up from there. 
Question: Do I need any licensing? If so, what kind of licensing do i need?
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