I love my PDA and ebooks, so I would buy that - in a heartbeat.
Have to agree though that ebook prices is too high, should be at least 50% off the real-book. But then again, there are millions of books available on the internet for download - and at a fraction of the size of a TV series, no need to worry about your cap!
HOWEVER, M$ have to inprove their abominable Reader - what a total piece of ****. I STILL cannot activate my PDA version, clicking the soft keys skips 2-3 pages, the Library has a useless red bar on the left, meaning you cannot see the books full title, and the list goes on (my favourite other pet hate is "Microsoft reader can no longer access the ebook").
Where possible, I use Mobipocket - touch anywhere on the screen to turn pages, better library layout, and it never "cannot access your ebook".
Not that it does not have its own problems (page numbers behave oddly and the autoscroll cannot be adjusted for speed?).