Worx via eBay offers the open-box Worx 6" 20-volt JawSaw Chainsaw for $109.99 with free shipping. That's the lowest price we could find by $27 for a factory-sealed unit. It includes a 20-volt battery and cuts materials up to 4" in diameter.
Note: A 3-year Worx warranty applies.
Here's how to minimize and delay the chunk that Uncle Sam claims.