I got a 50" plasma about 6 months ago. I researched all the specs to make sure I got a great tv - and I did. But what I hadn't paid any attention to was power consumption. I was pretty surprised when I learned my new TV uses 690W.
If you look at the back of a plasma tv they have fans on the back. The screen itself gets warm enough you can feel the heat on the back of your hand 3" or 4" away.
I have friends who cannot afford some things as nice as mine. If you were to ask them why they don't have a nicer one, they would tell you a reason why they don't want it.
People rarely admit that price is the issue, even when it is.