Some HD-DVD drives are now less than $100, and the newer ones are less than $200.
I don’t think that it’s going to make a whole bunch of difference, and that, to the degree that spinning optical media will be the future of movie distribution, it looks like Sony’s Blu-Ray has won (I got that one wrong).
On the other hand, if you want a deal, and HD-DVD handles existing DVDs quite well, you might want to go shopping.