I have bought a lot of cheap crap cables like this on ebay, and I assume that 10%+ of them will not be good, but the prices are so cheap that I figure I still come out ahead.
The exception is flash drives, I have bought at least a dozen off ebay and the majority of them were no good.
For those, I buy Kingston, Toshiba, and MicroCenter house brand. My daughter has a 5-year-old Kingston that has been through the washer and dryer at least twice and still works perfectly!