MSI Cards costs more because of the efficiency, Power consumption and "life span". Since I always need more CUDA cores for rendering. MSI was always the best choice when it comes to multiple GPU Rendering. Of course, Digitec had the best price when I purchased it.

I ask myself the same question... a few days before I ordered it because it was still 799.- (by phone) they said everything was OK they had it in stock latest Friday I could pick it up then a few hours later they said it was sold out now 2 days later they have 9 pcs in stock just be honest you don't want to sell it for 799.- instead of lying to your customers ;)