Newegg offers the Tek Republic 4-Port USB 3.0 Hub, model no. TUH-300, for $14.99. Coupon code "EMCAKAT63" cuts it to $9.99. With free shipping, that's the lowest total price we could find by $11. (However, we saw it for a buck less in November.) It features speeds of up to 5Gbps and hot-swapping capability. Coupon expires January 12.