Shame, they are really good on the drones they work with, almost all DJI models bar the new DJI FPV.
Just spent a weekend in the bush on a neighbours scrub property, and flew a lot with the M1P, 5 or 6 people had a great go with he RE's on while I flew normally, all of them blown away by the experience.
Keep an eye out the all the usual classifieds, here and the local type ones in the US, ebay, facebook, craigs list etc.
They do come up from time to time . . . there was a pair of the original white goggles (still available Friday) in the classifieds here on the forum.