I came across this site today (through Kotaku) that seems to claim that the PS3 is cheaper than an iPod, or a PSP, or DS.
http://www.hiroiro.com/entry/63.html
Yeah, it's Japanese. Take a look at the chart there. It shows how much each system costs in yen...
...per kilogram.
The PS3 is 12,000 yen per kilogram, the X360 is 11,000 yen/kg. The PSP is a massive 71,000 yen/kg, and the DSlite is even *more* expensive at 77,000 yen/kg. The 60GB iPod video cashes in at 300,000 yen/kg.
Good thing the DS/PSP/iPod don't actually *weigh* a kilo. Gadzooks.