I would advise against buying any pre-packaged, proprietary Linux PC like that. It's got a 4th Gen i3 with 4GB DDR3 RAM and last year's second tier graphics card. It'll be good for a little while, but PC gaming is already into 2160p and up whereas consoles are still stuck at 1080/900p. There's a new racing game coming out that's 12k resolution. You'll need moar powar to get the full effect of these games. I don't think you will be able to upgrade that like you would a regular PC, either.
I bought a better laptop for $379 last year. It has 6GB RAM and 750GB hard drive space. Run Steam in big picture mode, spend $20 on MS controller, plug the HDMI into my TV and I'm golden. I'd definitely return it if I were you.
I agree with you on the Alpha, overpriced for what you get.
But the consoles 1080P (at $400) vs a PC's 2160P (at MUCH more than $400) is not that great of a comparison.
Need more power to run that 12k resolution game? yeah... and how much will that cost? The biggest issue with PC gaming is $$$$$. Gotta keep spending more money to keep playing the new games, at least with a console it's $400ish every 4-5 years.
I build my gaming PC's, keeps the cost down... but it truly is a money sink.