Yes! I bought a Whistler TRX-1 off Amazon, got a bad one that looked like someone's return. It would only work off USB power. So I kept it for a few days to play with it before I returned it. I decided to get a 436hp instead, and love it. While I was disappointed that I got a dud in the end it was nice to test one to see how it did for reception and if I liked the interface so it worked outWell, I've only bought Uniden scanners since the early 80's and I haven't ever had a problem. So I'm just going to have some faith and go for it. I like that Amazon angle though. Those guys will take back anything, no questions asked.