I do, and I'll tell you why.
On various podcasts and even some message boards, the usual NPD discussions occur each month when the numbers are released. It's become as regular as the sun rising that Nintendo is going to have much bigger console sales numbers than the competition. This is true for both the Wii and the DS.
Yet, these discussions of said numbers almost never include some freaking context to the discussion regarding pricing differences. You usually just hear things like "Yeah, another crazy month for the Wii, outselling both the 360 and PS3 combined". Yet I cannot ever recall someone making a point of saying "Of course the Wii and DS are priced significantly lower than their competition".
In the DS's case, it's currently priced $40 less than the PSP. In the case of the Wii, it's currently priced $30 under the cheapest 360, and $150 under the cheapest PS3.
Please don't respond that "people know these pricing differences anyway, so that is why they don't tell you each time they discuss it", because these discussions I'm talking about often wax poetically about how "impressive" these Nintendo sales are.