It's just markup, you can get the same hubs (same exact hubs, I verified this by comparing the internals) from AliExpress for $20-50.
(Charge pass through, Ethernet, SD, microSD, USB Ports, HDMI 2.0 all in one adapters.)
(Charge pass through, Ethernet, SD, microSD, USB Ports, HDMI 2.0 all in one adapters.)