The kit is exactly how it is described. But be warned, this is not exactly for a beginner when it comes to the software side of things. You have to do your homework -- if you understand what you are doing, although it may take a bit of time, you'll be happy with the end product, as I am. (If you do not fully understand what Retropie, Noobs, Raspbian are, Google is your friend. Once you're up to speed, I am quite certain you will be happy also.)
In either case, be prepared to play with the software settings, do a little manual editing of some configuration files. The instructions included in the kit are NOT all encompassing, and you will need patience -- I work with computers, so I probably was better prepared than most people, but computers always need a lot of patience at times, and a Raspberry Pi is a small computer. It is work, but it is a very good learning experience, which I enjoyed.
Oh, and the game emulation works beautifully. Good sound and good visuals. So yes, I fully recommend the kit.