yes I bought one from Rich, it was ok...
the blocks are not strong enough for the thickness of the wood, you have to use really short screws which are no good, so it was kinda falling apart as I was building it, instead I drilled straight through and used coach bolts,, there was also no instructions so I had to put it together like a jigsaw, not hard for me but for other people who have never worked on arcade machines etc before I'm guessing they wouldn't be too happy, there was also 1 piece missing, can't remember which piece now but something was amiss?
He's also bought the really cheap buttons off ebay and drilled the holes for these, but the really cheap buttons are smaller then the normal ones, luckily I had some so I knew what he'd done, its also impossible to re-drill bigger holes
apart from these 3 issues = connecting blocks no good, holes too small, no instructions, it was ok for the money,,
There's a good market out there for these kits, and I reckon if someone had the enthusiasm to build these properly, and post them all ready built, someone could make more money then they are getting at the moment