laptop $$$

i'd really like to understand how dell derive their pricing schedules:

inspirons in .au:


inspirons in .us:

15" products are comparably priced, and au doesn't even get the 14" model, but the latest inspirons in 9"and 13" form, are almost twice the price in au compared to the us! will the new inspirons drop in price over time in au i wonder...

update: this is what i have been looking for!
http://cdimage.ubuntu.com/ports/releases/hardy/release/

oh i am a happy nerd right now - why do they hide such things?!