Yeah, the old "these other makes of computer" strawman, often by Dull, er, Dell Chumput0rz (the Wallyworld of computers).
I've gone on the Dull, er, Dell website which, first of all, is as ugly and clunky as their crappy machines, when you go and configure a 17" to get somewhere in the range of the Apple 17" you get right up to about the same price as the Apple Macbook Pro. Yeah yeah sure you can buy a 17" laptop for as little as $600, but it's a joke of a machine. Start putting in decent drives, an actual LED screen, and all the bells and whistles that the MBP comes with and you come to realize the prices wind up being close, then throw on the fact the MBP comes with OS X and can run Linux and does Windoze FTW.
That said Apple could/should be more competitive and still have some profit margin, MBs should start under a grand, the MBPs should start sub-$1500, and for the 17" $2499. I know Apple loves their markup, it's how they're staying profitable while Dull, er, Dell, with their cheapware and their intentional bait-and-switch and undercutting prices have meant they're actually not doing well financially (huzzah! hope they die soon and make the PC and Mac buying world a much more quality place). Never-the-less they may sell more unit and remain as profitable by lowering the prices a smidge. Not that it'll shut up the whiners "I saw a Dull for $399... Apple is dead, they don't offer a $399..." moronic spew without of course mentioning that's a cheap small plastic box running a Centrino processor from a 2003 parts bin, a leftover 3100 GPU, and you have to pay extra for an optical drive.
The Macs are a bit expensive but, for the most part, the parts there justify the cost, and instead of people whining about it, don't like it, go buy a Dull, which you'll have to get another in three years, which is a faster cycle than Apple, meaning, long run, you'll be spending more money on hardware, so proven by JD Power and others as Apple's last longer too overall. But people are cheap so gravitate towards cheap things. Then again the argument that makes the PC apologist squirm and come out with vitrol, you could by a Geo Metro or you could buy a Audi A6 (or, if you wish, a BMW 5-series), me, personally, would rather have the solidly constructed thought out German auto, or heck, a Japanese makes, but, Dull, er, I'm sorry, Geo buyers, you know, have to make themselves feel good about their purchase (of junk) so it's all good... I guess.