Grab Wireless via eBay offers the Samsung Muse 4GB MP3 Player in Blue, model no. YP-W1NAL/STA, for $12.98 with free shipping. That's $7 under our mention from a year ago and the lowest total price we could find by $4, outside of the close prices below. Features include 4GB of storage, six hours of playback, and an LED battery-level indicator, and includes a 3.5mm micro USB adapter, 3.5mm USB adapter, and a stereo headset.
Of note, ShipFastTech via Amazon has it in White for $8.99 plus $4.90 for shipping. Tanga has it in Blue and White for $11.99 plus $1.99 for shipping.