E Depot Express via Amazon offers Prime members the XBOOM Mini Boombox Portable Speaker in Black for $9.99 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.32.) That's $4 under our mention from two weeks ago and the lowest total price we could find now by $11. It features a built-in rechargeable battery, 12-hour playback, 2-hour recharge, 3.5mm plug, and modular connectivity (you can connect multiples of this item together for bigger sound).