Harman Audio offers the factory-refurbished JBL Pebbles Plug and Play 2.0 Audio System in Black, model no. JBLPEBBLESBLKAM-Z, for $41.99. Coupon code "20PEBBLES" drops it to $19.95. With free shipping, that's tied with our mention of another color from March as the lowest total price we've seen. (It's also $15 under the best price we could find for a new pair in any color.) It features USB input and an auxiliary port. A 1-year Harman warranty applies. Deal ends May 10.