B&H has the Lexar Professional USB 3.0 dual slot CF and SD card reader for $12.95 (reg. $33.95). Note that this card reader is back-ordered with available expected on May 15, 2015; however, you can place your order now for the sale price and it will ship when it gets in stock.
This card reader supports UDMA 7 for CF cards and UHS-I for SD cards, which means it can take advantage of the faster transfer rates provided by USB 3.0. Check it out here at B&H Photo.