Ending today, Adata via Rakuten offers its Adata 960GB Ultimate SU650 Serial ATA 6Gb/s 3D NAND 2.5" Internal SSD for $99.99. Coupon code "SAVE15" knocks it to $84.99. (You must be signed in to apply the coupon.) With free shipping, that's $9 under our January mention and the lowest price we've seen. (It's the best deal now by $18.) It features read speeds up to 520MB/s and write speeds up to 450MB/s.
With these companies, it might be easier than you think to negotiate your monthly bill down.