MegaMacs offers the Monster Digital Overdrive Mini 512GB USB 3.0 External Solid State Drive, model no. SSDOM-0512-A, for $249.99 plus around $10 for shipping. That's $36 below our September mention and the lowest total price we could find by $37. It features a laser-etched stainless steel enclosure, LED indicator, read speeds of of up to 250MBps, and write speeds of up to 150MBps. Deal ends December 24.