Rakuten offers the Adata Ultimate 256GB 3D NAND 2.5" Serial ATA 6Gb/s Internal SSD for $67.99. Coupon code "AD10" cuts the price to $57.79. With free shipping, that's the lowest price we could find by $8. It features read speeds up to 560MB/s and write speeds up to 520Mb/s.

The Adata Ultimate 512GB 3D NAND 2.5" Serial ATA 6Gb/s Internal SSD for $117.99. Coupon code "AD18" cuts the price to $99.99. With free shipping, that's the lowest price we could find by $13. It features read speeds up to 560MB/s and write speeds up to 520Mb/s. Both deals end May 21.