Meritline offers the refurbished Logitech S715i Rechargeable Speaker System with iPod Dock, model no. 984-000134, for $39.99. Coupon code "MLCKX13ENL1" cuts it to $31.99. With free shipping, that's the lowest total price we could find for a refurb by $28, although we saw it for $2 less last month. 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. Coupon expires after 100 uses. Note: No warranty information is provided.