For my area, that is relatively cheap when compared to the prices asked my local arcade shops that sell used arcade systems. The one near me asks $1500 (US Dollars) for a single slot in "very used" condition without a game. And get this, they sell 'em to the unknowlegable buyer looking for somthing to put in their game room.
Are the silver version that you speak of the metal cabinet versions? You can get 4 slot sit-down style metal cabinents in the US for around $300 in new condition without PCB or games.