In situations like this I wonder why I bother living in an expensive country with constant rain and miserable people. I’m aware things won’t be perfect in a place like this either but I’m willing to bet I’d be a bit happier.
As a British person I can relate.
The flag of the Kazakh SSR seems to use a different version of the hammer and sickle and the blue stripe appears to be slightly thicker than the red below it unlike this unknown flag where the white stripe and the red below it are the same thickness. Plus the eBay listing is for various historical flags of the Soviet Union so a flag of a specific SSR would be out of place.