i dont think he is making them to sell, it looks to me like one he built for himself. my horizontal MAME has a 2.6GHz processor and just over 500MB of ram and it works fine for the vast majority of games. my frogger has an old laptop from about a dozen years ago, dont know about the processor but it has a whopping 128MB of ram and still runs all the classics fine. i dont think its a big deal to sell a personal MAME cab with a shitty computer in it, in fact one of my favorite things about MAME is that you can build a rig easily with pretty much any shitty old giveaway PC and beat to crap JAMMA cab. the price isnt even that bad considering it has a trackball and spinner, theres alot of expensive parts in there. if i built one of those i wouldnt sell it for a nickel under $600. i would never build an ugly piece of shit like that tho lol