Sears offers the Craftsman 20" Gas Chainsaw, model no. 35098, for $179.99 with free shipping. That's $100 under list and the lowest total price we could find, although we saw it for $9 less a month ago. It features a 50cc 2-cycle engine, anti-vibration handle, steel blade, bucking spikes, and carrying case.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.