Well IBM has announced the 80GB laptop drive for their ThinkPad Range.
Click Here for the announcement details - this link has links to a PDF info file and pricing.
The drive costs $499 according to that announcement.
So, I'd expect them to start showing up pretty soon in regular outlets. Don't know if the price is good or not.
The availability date is given as May 9.
I also note this comment:
Limitations: Continuous use of the ThinkPad 80 GB HDD, as in reading long video files, will impact battery life.
Hopefully the 60's and below will start coming down in price as well now.