You're explaining why your opinion or guess or hunch or prediction or whatever you want to call it is likely to be correct. i don't dispute it, nor do I suggest I hold a different opinion.

However, I am suggesting that your opinion/hunch/prediction is unfounded. Meaning, it is speculative and not based on some specific factual evidence in hand.

For example, if you heard about the pricing from a buddy that is working on the apple.com web site you would be passing evidence along.

I'm not suggesting you shouldn't be speculating along these or any other lines. I just found it interesting that you would mention unfounded rumours in the same comment as sharing your own speculations about what Apple might or might not do.