You seem fixated on just this one little piece (the rumored price), and continue to imply that it is virtually impossible.
Fixated? It's the only surprising part of the rumor. None of the rest of the rumor is interesting to me because it all seems obvious except for the possibility of apps. Based on iOS? So is the current version. iPad remote? Not really a stretch since we already have an iOS remote. iTV name? Who cares?
Sure it adds that there will be apps. Will they have to be developed specifically for the iTV or will it support apps developed for the existing touch-based iOS devices? That's the big question to me. I'd bet on only iTV specific apps with remote-based input with easy ways for developers of apps that would make sense on a TV to convert their apps to the new UI. Possibly a way to output certain apps on an iPhone to the iTV - maybe through an iTV companion app. Remote possibility of a Wii-like remote that would map more closely to touch-based input.
Perhaps we should clarify some math then? Some of your comments reads like "Apple margins" is some hard number, when in fact, they are merely a percentage of sales. Apple seems to like margins in the 30%-40% range. For the sake of this, let's dismiss the idea of trying to price this on the low end and cut it down the middle. That would be 35%. What does the case, chips, ports, etc have to cost to yield 35% margins at $99?
About $74.
You need to check your math. 35% margins on a $99 device would imply materials and manufacturing costs well under $65. As I pointed out from iSuppli's iPhone 4 breakdown, an A4, 16 Gb of Flash, and a Wifi chip cost $60. $5 for the case, coprocessor, power supply, inputs, outputs, ethernet, remote, manufacturing, packaging, etc. is not reasonable. And that does not include IP such as patent licensing and software.
Lastly (but probably unlikely), Apple could take the razor blade approach and wash out much of the margin on the hardware, with a goal to make up for it on the software sales. Lots of iTV's in the home will be a tempting vehicle through which to buy iTunes content on demand... and maybe this iTunes subscription program. On the other hand, price it too high (again) for the masses, don't sell many of them (again), allow other internet-connected devices to entrench in volume, and have a near ZERO chance of the owners of those other devices buying/renting their media via iTunes through the little boxes connected to their HDTVs.
Why is that unlikely, especially considering that they are doing that with the current AppleTV?