Meritline offers the refurbished Logitech S715i Rechargeable Speaker System with iPod Dock, model no. 984-000134, for $48.99. Coupon code "MLCKW11UNL1" cuts it to $29.99. With free shipping, that's $30 under our mention of a new unit from last summer and the lowest total price we've seen. (It's also $59 less than the best price we could find for a new unit today.) This speaker system charges your iPod or iPhone while playing content off your device via the integrated dock. It's also compatible with various other MP3 players and smartphones via its 3.5mm input. The included rechargeable battery offers up to eight hours of music playback. Deal ends April 12.