Adorama has the Rokinon 50mm T1.5 Cine DS lens for $379 (reg. $549) for Canon, Nikon and Micro Four Thirds mounts. The deal is available through February 7. Check it out via the links below.
B&H has the Datacolor Spyder5PRO and Spyder5ELITE Display Calibration Systems as its Deal Zone deal for Friday and Saturday only. The Spyder5PRO is now $109 (reg. $189) and the Spyder5ELITE is now $174 (reg. $279). Check them out while the deal lasts here at B&H Photo.
The Spyder5 is an excellent display calibration tool. For more about they system and how it works, read my Spyder5ELITE Review.
B&H also has the Manfrotto BeFree compact travel carbon fiber tripod for $299.88 (reg. $349.88). Check it out here at B&H Photo.