Adata via Rakuten discounts its Adata Ultimate SU800 3D NAND SATA 6Gbps 2.5" Internal SSD in several sizes via the coupon codes listed below. With free shipping, that puts all three drives at their best-ever prices. The deals, with prices after their respective coupons:
  • 512GB for $49.29 (via "AD8", $9 off)
  • 1TB for $90.09 (via "AD15", $16 off)
  • 2TB for $182.74 (via "AD32", $32 off)