[dogscoff]

So this guy will have spent double the amount that a top of the range card will have cost him beacuse you'll have bought basicly 3 GFX cards compared to 1 for the same amount of time.

Well no. The point he made is that even though he bought 2 or 3 GFX cards instead of one, it still cost him less because one top of the range card costs more than 3 older ones, because that's just the way graphics cards are priced these days.
As a bonus he gets to sell on/ re-home the old ones as he upgrades...