If you ARE NOT a DATA user, the maxis package will be definitely looks expensive to you.
However, if you ARE a data user, the package can look more reasonable...
My 2 cents...

Yes, I am an Unlimited data user and my total call charges (including data) is almost RM 250 per month.
If I were to buy iPhone from Maxis, it would seem reasonable.
But if most users call/data charges are < RM 100, it will not make much value. They might as well buy from the Black market...

Yes, I was also surprised to see that its not totally 100% unlimited data package from maxis.
Maybe maxis have the impression that most casual mobile data users (if only use iPhone for web browsing) will use 1GB or less data per month. (I'm not sure mine is how much).
If the usage is meant for P2P, definitely 1GB is insufficient.