So ... tired ...
Blu-ray isn't enough to explain the 200$ difference. A Blu-ray drive is an incremental cost over DVD of what, 30$ tops, going down every day. There is something else.
Sony is quitting the loss-leader business model (see support for standard consumer flash formats, standard SATA HDD upgrades, use of bog-standard USB and HDMI cables for the controller and video output, Bluetooth headsets). Nobody wants to compete with Microsoft on the ability to lose money anymore, so nobody's going to risk their fortunes on accessory sales. Nintendo has adapted to this as well, but from a different angle. They have the lowest cost hardware of all by a mile, so they can undercut whatever price the competition sets and still be profitable.
Sony sells basically at cost now, foregoing (unreliable) "extra" revenue streams from proprietary storage, chargers and cabling junk, giving them that certain attractiveness of a more open platform. Say hello to "Other OS", too -- you can build a compute cluster of PS3s and never buy a single game, Sony will not stop you. That's of course still a gamble, but with no per-unit money on the table, so it's safer for them, whatever the outcome. They could lose domination, but they cannot lose money.
That's why the PS3 has its price tag.
Yes it is. It's interesting when you connect this with your sentiments about the console prices. IMO anyone who can afford to buy a nice HDTV, which is an investment of at least 600$, better make it 1000$ with the sky being the limit, really has no place bickering about the price differences between the two HD consoles.