Amazon offers the Plextor M8Pe M.2 2280 256GB PCI-Express 3.0 Internal Solid State Drive for $107.07 with free shipping. That's the lowest price we could find by $26, although we saw it for $5 last September. It features a PCI-Express 3.0 x4 connector with up to 2,500MB/s sequential read and 1,400MB/s sequential write speeds.