I think OP meant products that convert 110V mains power into several high-wattage USB-PD receptacles (as opposed to the usual meaning of "USB Hub" for connectin

I think OP meant products that convert 110V mains power into several high-wattage USB-PD receptacles (as opposed to the usual meaning of "USB Hub" for connecting multiple data devices to one USB host port). Anker's best offering in this category runs for $150 and only has 3 USB-C ports (which share a combined 240W limit—good enough for most applications but still not the full PD 3.0 limit of 100W per port, and nowhere near the PD 3.1 limits). A true "power strip" offering 5 or more high-power USB-PD Type-C ports would be nice, though it would need the equivalent of a pretty beefy PC's power supply to drive many simultaneous loads at those limits.