Vantec NexStar SATA to USB Hard Drive Dock for $15 + free shipping
Newegg offers the Vantec NexStar 2.5" / 3.5" Serial ATA to USB 2.0 Hard Drive Dock, model no. NST-D100S2, for $19.99. Coupon code "VANTEC0514" cuts it to $14.99. With free shipping, that's the lowest total price we could find by $7. It supports 2.5" or 3.5" Serial ATA hard drives up to 3TB. Coupon expires May 31.