4-Port USB 3.0 Hub w/ 3-Foot cable for $12 + free shipping via Prime
EasyAcc.A Store via Amazon offers the EasyAcc 4-Port USB 3.0 Bus- and Self-Powered 2-in-1 Hub with 3.3-Foot USB 3.0 Cable for $14.99. Coupon code "30HOTHUB" cuts it to $11.99. Plus, Prime members qualify for free shipping. (Non-members can get free shipping with orders of $35 or more; otherwise, shipping adds $8.28.) That's $8 under the lowest total price we could find for a similar hub without the longer cable. (Non-members can spend $35 to qualify for free shipping; otherwise, it adds $5.39.) Note that this item isn't meant to be a standalone charger; you may need to plug charging devices directly into your computer.
4 very similar deals were also reported by some other sources: