Vic,
Give the Chinese their due, they are constantly innovating. And £7 for such tech seems quite ‘fantastic’.
Adam Savage had a look inside some USB C cables last year …. https://www.youtube.com/watch?v=AD5aAd8Oy84

An Apple Thunderbolt 4 USB-C …….. versus ……. an Amazon basics cable.
He’s not really comparing like with like….the Apple one does a lot of processing within the cable ends whereas the Basics one just passes current. But the differences are nonetheless quite interesting.
Ches.