Not only is it the cheapest option, but it's the only one that offers purist controls.
The rating, 70W, is emblazoned on the front. That doesn't sound like a lot in the face of chargers that go to 140W and beyond, but it's fine for the majority of devices and will charge big devices ...
If you own an extra pair of Switch 2 Joy-Con then by all means, I definitely recommend grabbing this Jsaux EnergyFlow ...