Like others stated here, it's pretty much useless for your average "gamer" or regular consumer. I understand that these are absolutely worth it for someone that does more than just game on their computer at home. I work in the I.T. industry, come on...
And this goes further than just the Packet Prioritization that any decent router does now; they're forwarding your traffic to another location to further "prioritize" your connection for your games. Largely a useless thing, especially since you have to pay for it. This is the bullshit that is built into many ASUS routers right now:
https://www.wtfast.com/
I'm not sure why so many in this thread got hung up on the "gamer' verbiage. I never once thought about this NIC as a gaming oriented device; it is just another NIC and one that happens to be 10G. When I think of 10G, I think of higher throughput. Something that people in this thread apparently aren't trying to tap into very much, but just because they don't doesn't mean there isn't many reasons why they couldn't.
We need to embrace 10G as a standard. It is easily one of the biggest bottlenecks today. It isn't useless for the average household.
A typical household isn't going to have ethernet installed in the walls, but what about when your typical tenant moves out and the average gamer/IT professional moves in and needs great connectivity? Now let's say that house happened to have ethernet in the walls, but it was only Cat5 but they needed 10G. You shouldn't define limits for people who are the typical average user.
The thing about standards is 1) they should accommodate the vast majority of people's needs and 2) provide room for growth. Sorry friends, but ye ol' 1Gbps ethernet is pretty long in the tooth and just needs to go. We need to move on and embrace 10G as today's standard.
Aquantia is trying to do this with its very reasonable price. They are merely using buzzwords with "gamer" just like all other marketing departments do.