I'm not sure why there would be disagreement with any of what I've said in this regard.
The underlying point to all of it is, "if it's too good to be true it probably is". I'd guess that adage predates everyone on the forum.
That doesn't cover every conceivable situation, but it's a damn good place to start.
I get exactly what you're saying. I consider it a 70 dollar education, and won't be buying connectors, cables or anything like that on ebay anytime soon.