Honestly, not much. Pay attention to our reviews and those from other shoppers, but buy according to what the hub or dongle offers. You can absolutely find solid USB-C hubs and dongles for an inexpensive price.
USB-C docking stations, though, can feel a bit overpriced. In part, that’s because Thunderbolt docks were wildly expensive during the 2020 to 2021 pandemic years. USB-C docking stations are an alternative, but their prices were sucked upward, too. Fortunately, prices are trending downward, as the supply chains regain a semblance of normalcy.