Grade R means accidented/damaged, and in as is condition, repaired after being brought in by the Karachi port by our desi ustaads, as far as my knowledge goes. If that is worth your money, then go for it. Its russian roulette, but you're playing it with your own money.
There are also a few owners threads and fanclub threads for both the WagonR, and the V2, to get an idea of interior et cetera if you want more information on either car, as well as the Move and most other popular recycled small and kei cars being imported. Do have a look at them.
And you're welcome too Salman. My pleasure.