Harman Audio offers the factory-refurbished Harman Kardon Onyx Studio 2 Wireless Bluetooth Speaker System in Black or White for $79.99 with free shipping. That's tied with our January refurb mention as the lowest total price we've seen. (It's also $55 less than the best deal we could find for a new unit.) It features 15 watts per channel into two 3" woofers and two 3/4" tweeters, a speakerphone, and rechargeable Li-ion battery with up to five hours of play time per charge. A 1-year Harman warranty is included.