Adorama via eBay offers the Samsung 850 EVO 250GB Serial ATA 6Gb/s 2.5" Internal SSD, model no. MZ-75E250B/AM, for an in-cart price of $99.95. (Amazon offers it for the same.) With free shipping, that's the lowest total price we could find by $16, although we saw it for $4 less two days ago (since expired). It features read speeds of up to 550MB/s and write speeds of up to 520MB/s.