@Raja, Yes. They don't feel premium like the HTC One X.
@AHC, yep. That's the main reason it's upto. Or else they won't able to offer it at that price.
@Superbad, true but they are almost same except the Sony phones I guess.
@Dharmesh, Yeah, that's why I don't like about them. :(
Sony is the most costly at the time they released the phones.