VM Innovations offers the refurbished Ryobi 18" 46cc Gas-Powered 2-Cycle Chainsaw, model no. RY10518, for $117.95. Coupon code "G8PQPS" cuts the price to $99.99. With free shipping, that's the lowest total price we could find by $27 for a refurb. Features include an inertia-activated chain brake, anti-vibration handle, and an 18" bar and chain for logs up to 40" in diameter.
A 90-day VM Innovations warranty applies.
The Microsoft founder -- and richest man in the world -- also suggests one great book to read.