Years ago I was driving 2 4k monitors using a TB3 cable that cost maybe $20-$30, so this one kinda seems like overkill. Granted, those monitors were plugged into a TB dock separately instead of daisy-chained, but there was only one cable between my laptop and the dock so it seems like the bandwidth was already adequate?
It's been a while so I don't remember exactly, but I'd guess in the $150-$250 range. Before the inevitable comparison to the $130 cable I should point out that the dock was for more than just connecting to displays (IIRC SD card reader, audio, and a shitload of USB-A and a handful of -C ports. And presumably the cable that came with the dock would work directly with daisychainable 4k monitors... Although the display stuff was confusing. At the time it was a pain in the ass to find a dock that explicitly saod it could drive multiple 4k monitors without having to fall back to 30hz
I might be wrong, but I thought Thunderbolt 3|4 cables are not the same as USB cables at all, and the terms can't be used interchangeably. TB3/4 use the USB-C connector, but that's it.