Apparently George Fornay (president of Sony Computer Entertainment France and vice president of Sony Computer Entertainment Europe) confirmed to Generation Europe 1, in French, that the PS3 could be priced around the 500 euro mark, most likely between 499 euros and 599 euros. For the unfiltered French audio, try the Play button near the middle of Europe 1's podcast page here.
Such an estimated figure may include Europe's Value Added Tax (VAT), so the final price range in the States might well be lower than the current U.S. currency equivalent of roughly $600-$725 for those many euros. Of course, who's to say whether Mr. Fornay was simply speculating on a local podcast or whether he actually exhibited loose lips before the French press?
[Thanks, Fan; also via Joystiq]