The point that all the fanboy apologists are missing is not "used versus new" red herring. When I send my radio back in, I know that it's "used", so I don't necessarily expect to get a "new" one in return.
The problem is that I know exactly how it's been "used", which is very carefully. I have not hooked it to a bad power supply that might have damaged the radio in a way that won't manifest for a couple of weeks or months. I have not manhandled the USB connector and weakened it mechanically so it will fail prematurely. I have not hooked it to an antenna that's right next to a transmitter's antenna and guaranteed that the RF front end will fail next year. And I could keep going.
If I get back a repaired scanner that someone else has had and been using for the past 2 months, I know NONE of these things about it. Free from scratches does not mean free from abuse, regardless of what letter code has been slapped on it. Sure, I have a warranty. But having a pathway to send the radio back in yet again, all because of a manufacturer's defect, is a very poor substitute indeed for what we all bargained for, which is simply a working radio.
Of the roughly $50,000 in radio equipment I've paid for, $4,000 of it came from Uniden. But if I return my 536 for repair and do not either (1) timely get back my radio repaired or, (2) if Uniden cannot, for their own reasons, do that, then a new radio, I will press this issue with Uniden's legal department.