$22 is still outrageous. Except for the GFCI's most standard receptacles in homes are less than $2 each. That now changes it to needing to be 11x the functionality.

How many times have you really needed or even wanted to charge more than 2 devices at a time from a single outlet? I can't think of any situation that the need exist other than some mobile hot spots like a coffee shop. Even then I don't think you would find four people sitting together that all needed to charge a device at the same table very often. At ~$7 I would buy a couple just for the convenience of not needing the charging block, but anything more than that and it's not worth it for me.