@ZIppyDSM
PS3 short run
$500
System 225$
HD:50$
BR DVD:225$
Wireless networking:50$
360 Long run
$700 plus cost of net 50$ a year?
System:250$
HD 100$ for 20GB
HD upgrade: non supported mod kit 50-150$
HD DVD 200$
Wireless networking extra 50-100$
Now, I know there's a discrepancy in the way you've displayed your data. Because there are two ways you could be doing it, and neither of them will apply to both systems correctly.
The cost levels are.... off, on both of them. First off, no one who has wireless networking would ever suggest wireless networking for gaming purposes, while in their right mind, lol. It's TERRIBLE. Even boosted G equipment creates lag in the same room. A standard is fast, but not distance/obstruction effective.
360 w/20gb $400(Rip off)
Wireless adapter $0, because it ruins broadband gaming
Online Service $50/year(If you're smart, and don't do the monthly.)
About one week later, exchange it if you got a launch system, for a new working one.
HD DVD $200 that doesn't do
1080p, due to system restrictions
Total after one year $650 and some of your sanity
PS3 w/20gb, w/blu-ray that can do
1080p $500
PS3/PS2 memory card adapter $20
Wireless adapter $0, because it ruins broadband gaming
Second PS3 one year later w/20gb, w/blu-ray $500
Total after one year $1020, and none of your sanity
So, really, the PS3 will cost more (lol @ replacing in one year); but the 360 launch took away from some people's sanity. So it's kind of a trade off, more cash for more reamining sanity.
In reality though, it comes down to what your needs are; most users don't need
Blu-ray or HD DVD yet, because like I've said before, a majority of users have yet to get
HDTV for their home. It's getting there, but still has some way to go yet.
Both systems are expensive, and each have their trade offs; but really, nothing's changed. Sony has RPGs that XBox doesn't. XBox has a few shooters (Yes, more than Halo) that Sony Doesn't. It's a trade-off; and it's which controller you prefer, and a couple(literally) games/series that you 'must have'.
Oh, and for the record, I'm not here to say that either manufacturer is junkier than the other, but it sure is fun to instigate, isn't it?