Tread carefully. The cars are likely to be odd spec and, depending on how much preparation work the garage does, might have some strange features (such as a non-European navigation or infotainment systems). You might even find it's difficult to insure a Japanese import and it's likely to be harder to sell at resale time. What sort of history do they have, too? There are plenty of good second-hand Volkswagens around - I'd look elsewhere.