I didn't see if they are including licenced Capcom ROM files; but all and all, an interesting product. I'm glad to see it.
It's included with the hotrod.
As you said, it's an alternative to those who don't have the time, tools, whatever from building their own. people have to remember, with a commercial product you are not only buying the product, you are buying the technical supposrt that comes with it. You can't say that about home built cabinets or used cabinets.
I don't see it as that bad of a deal. So far to build my cabinet it probably has been probably about $700-$800 (not including computer) and alot of time. I still have a bunch more to do to the cabinet too.
ArcadeWerks is $600+$200 for hotrod+$200 (use own own monitor). that's $1000. Ok, so $200-$300 more than what I have so far I could get a kit, save time, and have tech support, and I wouldn't need as many tools (hence I wouldn't have had to build it in my dad's garage, I could have assembled it in my apartment). As they say, time is money, if you want to save time you better spend the money.
Now, someone might complain aobut shipping cost being added on. well, you are going to end up paying shipping on all the arcade parts, arcade monitor if you use that, or anything you get from ebay. It all works out pretty evenly.
Now, the bigger question is, if you modify the cabinet or hotrod, does it void any tech support or warranty? The first thing I would do with the hotrod is add a spinner.