Agreed; besides the fact that you typically spend more for an SLI setup than a single card that performs better, you also have to take into consideration the fact that not all games work with SLI and that its benefits are only useful at high resolutions, rendering it useless at typical monitor resolutions of 1440×900 or 1280×1024; you would need 1600×1200 or higher to really take advantage of SLI.
