What on earth...
....are you on about.
How is it going to be cheaper? They've not even made any yet! Being new technology it's quite likely it'll be more expensive.... do we get to see it with Profile 3.0 do you think, so there's a whole new list of films you can't watch until you buy a new player?
Cheap seemingly isn't an issue in the market, that's clear from the fact that HD DVD players are half the price of Blu Ray players, yet BR is doing well because of the PS3, no one in their right mind would buy any other player currently on sale, upcoming Panasonic BD50 is about the safest bet.
There are no nails necessary - what's wrong with two formats? Personally i'd rather there were just HD DVD as it's technologically a superior format, the hardware is also... but sadly that doesn't seem likely so we'll stick with region coding, unfinished standards etc etc