Amazon offers Prime members the Sabrent 2.5" / 3.5" Serial ATA to USB 3.0 Hard Drive Dock, model DS-UBLK, for $19.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $9.05.) That's the lowest total price we could find by $10. It supports 2.5" or 3.5" Serial ATA hard drives up to 4TB.