I bought these recently on eBay UK. Paid £27, shipped, for the microphone version. Delivered within 10 days.
So far, impressed with the sound quality. I am no audiophile, but these sound better than my ancient Shure SE510 pair (as I said, I am no audiophile :-)). Sound even better with a Hidizs Sonata III DAC, another recent purchase. Call quality is also good. My typical use is listening to music / podcasts through my Huawei P30 Pro.
The only thing I am unhappy about is that the cable tangles very easily and looks a bit fragile.