J&R offers the Crucial M4 128GB 2.5" SATA III 6Gb/s Internal SSD, model no. CT128M4SSD2, for $159.99. Coupon code "PRESDAY" cuts it to $144.99. With free shipping, that's $1.13/GB and the best price we could find by $10. (It was $5 less last week, since expired.) It features read speeds of up to 500MB/s and write speeds of up to 175MB/s.

Note that it's currently out of stock, bu can still be purchased at this price, to ship when available.