Sorry, but I'm going to pick on this a touch.
Why are people so obsessed with this powerline crap. Their throughput is shoddy at best, they even FEEL flimsy, and at the end of the day this still isn't a wireless connection.
Personally I dislike wireless (from a security perspective), which means I take the time to cable the building properly, even if that building is my home.
Because at the end of the day it's a printer, so high-throughput probably isn't that important (and in my experience even the cheaper ones won't perform any worse than the average 11G link).
Not too sure why you think their throughput is "shoddy at best" I get fairly consistent 45Mbit/sec out of mine, double what 11G is capable of under optimal conditions. Sure nothing in comparison to the rest of my GigE wired network, but it was a nice easy way to put a hard wired connection where it was not practical / possible to run a cable into.
The wireless signal where the printer is going may not be the best, and if you're going to have to plug in a wireless bridge you could just put one of these into it.
Some of them aren't the best built, but the ones I have are perfectly solid enough, I mean you plug it in and leave it WTF are you doing to do to break it - throw it around your house a bit?
Oh, and lastly...
ITS ANOTHER OPTION TO CONSIDER.