Newegg offers the PNY 120GB CS900 Serial ATA 6Gb/s 2.5" Internal SSD for $49.99. Coupon code "CUP2018SSD" knocks it to $29.99. With free shipping, that's $7 under our May mention and the best price we've seen. (It's a low by $8.) It features read speeds up to 515MB/s and write speeds up to 490MB/s.

Update: Walmart now charges the same with in-store pickup.