Go for it. They probably aren't bad if you're getting a UFO, I grabbed 6 all for under $160. UFO's have become a big enough product with enough competitors that shitty makers had to improve their product to keep selling. Avoid Dual-band LEDs, those are most of the older ones that people are still trying to push off; but, and model that says made in 2010, or quad-band is probably a good buy. I can look at some of the auctions you're interested in, just link them and I'll let you know my take.