Hi galfert,
I don't like to publish ways to beat the system with Amazon, but I will share anyway since you asked.
We have received returned units from Amazon that have our outer box and completely different equipment inside. La Crosse, AcuRite, Ecowitt. Some returned stations marked "no longer needed" have years old equipment in the returned box. What happens is someone purchases a new station, puts their old components in the box and ships it back as new. How that makes it into another customer's hands from Amazon is beyond me. This happens about 20 times a year with Amazon. It never happens when purchased from us directly.
I spoke to manufacturing, and I was told that it was impossible from a logistics standpoint to receive a 433 MHz array with a 915 MHz unit, so I can only conclude is the customer received the unit as new. Even the customer mentioned it looked brand new, but the picture above shows rust marks, scuff marks, and other wear and tear. It's therefore obvious to me that the unit was used, not new, and did not come from the factory. It certainly did not come from us.
All of our returned units are tossed, unless they are absolutely never touched, and only then do we sell it as an OB or open box, at a discount. What concerned Anthony from Customer Service, is the customer mentioned it was brand new, and the image below showed a unit that appears to be used. He should have been a bit more understanding, realizing the customer may not know what a used unit looks like. I can easily spot it from the image below but perhaps only an expert can pick it up.
I think the issue is Amazon does not always inspect units that are returned, or may not even know what to look for.