Just a suggestion, you really want to use more recent stuff when trying to get a point across. That article is well over 3 years old.
As of this post, from the Australian online stores, I can get the standard Macbook for $1,599.
With the same specs (2.13 GHz Core2 Duo, 2 GB RAM, 160 GB HDD, etc), I can get a Dell Inspiron for $749. And that has a bigger screen, too.
I'm no Mac hater, but you may want to check before you go referring to old articles, m'kay? :D
lol, the top of the line Mac Pro with every option upgraded would set me back ~$36,000 AUD. I know no-one would do that, but.... lol.