Maybe I'm getting old, but I don't care about Natal or 3D or any of that. They should focus on making the games better instead of focusing on gimmicks.

They could have said Natal will be $50 and there would be the same level of bitchery in this comment section. In fact, whenever this or Move are talked about in any form, all I see are comments like "why do I need this?" (BTW, you don't. No one does. We're still talking about video games here).
 
$150 is not that surprizing a price, y'all. That makes it cheaper than a Wii, and more expensive than a Wii fit. Now how did those two products sell to the "non-traditional gamer" market?

it makes sense considering people already need to have a 360. it cant sell at a console price.

"Will buy, will regret ... "

$150 would be a non-starter for the majority of current 360 owners - there's no way I would drop another 1/2 console for a peripheral.  MS would need a serious attach rate for Natal to be a success, and very few peripherals get the attach rate needed to be successful.  I also don't think a $300 Arcade + Natal is a good deal either.  
 
Microsoft leaking a $150 price before E3, then launching it at $99 starting in September?  I'd understand that.  Their best idea is for a new SKU that includes a slim 360 with a built-in hard drive (at least 60 GB capacity) with a Natal for $300.  
 
I'm afraid that MS has to treat Natal like a new console, in that they will have to sell the hardware at a loss in order for units to get out there and become attractive enough for developers to program for it. 

"  ONE HUNDRED AND FORTY NINE US DOLLARS "

terrifying, if i do say so myself.