I have a similar story, except the people I asked about it convinced me it might be a scam. I bought some later, but it wasn’t the lifechanging amount it could’ve been.

Looking at other sources, it looks like they’re shipping them to other counties. Now they’re homeless somewhere else. How heartwarming.

I used to work in HVAC. I remember we had a small cold room that was struggling to maintain temperature, as in, design was supposed to be 0°F but it couldn’t get below 36°F. There was a large hole in the box that was undoubtedly the cause of the problem, so I asked the installer how they accounted for that. “Oh, I doubled the infiltration value.” When I tried calculating the actual losses it was way, way higher than the infiltration value. Like, the room needed someting like 3-4 times its total refrigeration capacity to reach target with a giant fucking hole in the box.

No idea who thought putting a giant hole in the box was a good idea.