Doesn't give exact $ as it's only shipping to commercial customers at the moment. But the site does say:
"One of the main features of the PowerPC 440EP is the presence, together with the CPU, of a number of integrated peripherals. This allows us to build a complete system with a huge savings of both development and debug time, with less components and space used on the PCB. This also results in a significant cost reduction for the customer."
So I can only assume that at worst, it will be reasonably priced.