I can't help but notice his site reads like one of those get rich quick commercials.
That's probably because their cabinets aren't exactly legal.
Voyager Arcade Cabinet InfoGame List:
Donkey Kong, Donkey Kong Junior, Scramble, Space Invaders, Dig Dug, Lady Bug, 4DWarriors ,1942, Galaga, Galaxian, Frogger, Pacman, Phoenix, BombJack, Lunar Rescue, Moon Cresta, MrDo, PacmanPlus, StarForce, UniWars, Wonder Boy, Xevious, Gorf, Moon Patrol, Terra Cresta, Eyes, Son of Phoenix, Star Force, Video Hustler, Vastar, Wiz, MX 5000, MegaTack, Jail Break, Gyrodine, Pleiads
"
No charge is made for the games, they are installed free of charge." <- The red flag.

Nintendo and Namco don't give away their games. Nor are the titles in the appropriate "groupings" that are available for licensing. I can pretty much
guarantee that they don't have a license to put those in a commercial setting like they are. If they do, they'd have to have something pretty special on their hands to be treated differently than every other cabinet manufacturers. Which leads me to the next point...
They're using a 17" monitor in an upright and a 14" in a cocktail?!?!? For £1600 (~$3000.00) you should be getting something with a decent size screen. PacMan on a horizontally mounted 17" monitor isn't a $3000.00 experience.
I *do* admire the push for some old school game development though. I'd like to see something like a Visual Pinball community for arcade development. There are some pretty good original ideas out there, they just need a common engine to run on. If there was a MAME equivilent for
original titles, I think it could work well.