Sony marketing is top notch!
No, you don't have to buy a Blu-Ray thing and a seperate SACD player. Its funny that many people scoff at the idea of the PS3 as a seperate entity from Blu-Ray players when it happens to be the best, and future proof at the moment. Yes, the PS3 plays sacd's, no other blu-ray player does. Yes, Sony's PS3 will be Profile 2 compliant; current and other machines on the market will not be; they require firmware upgrades.
Though many shopper perceive the PS3 to be a gaming device, it is not. It is a central media hub that Sony crafted and gambled with, and only now are slowly seeing the fruits of thier highly risky labors. Turning your nose up at this option, which is the cheapest, is hurting yourself and your wallet.