thesmartesthouse.com, the Z-Wave store owned by Zooz, has a Black Friday / Cyber-Monday sale. They are good supporters of openHAB, helping us get their devices supported in OH.
Last year I plugged in LED Christmas tree lights. Adding an LED star tripped the internal electronics. Support thought the device would not support that even though the overall current was very low, so they replaced the devices as a courtesy since I have dealt with them for OH.