Considering ps4p 4.2tf is only $100 more now than the XBox One s 1.35tf, that's not so unreasonable. It wouldn't be much of a premium machine, more like a pro :)
If MS goes the premium way, new CPU, 12GB ram, 6tf GPU, 4K UHD drive with dolby atmos / dts:x support, 2tb hdd, 499 at least. Ofcourse next year it will go up against a 349 pro and 249 slim.
Anywho since both slims start at 299, is MS making a slight loss on the slim or is Sony increasing their profit?
(I'm guessing a slight loss on the 500GB, no way there is 50$ difference between the drives and the 399 version came much sooner to sweep up the early adopter fees)