Staples offers the Samsung 500GB EVO 850 mSATA Internal SSD, model no. MZ-M5E500BW, for $199.99. Pad your order over $200, then checkout via Visa Checkout to cut the price to $149.99. With free shipping, and minus padding, it's the lowest total price we could find by $45 and the best we've seen for a 500GB mSATA SSD. It features read speeds of up to 540MB/s and write speeds of up to 520MB/s. Deal ends July 24.