We were talking about EK waterblocks, the nickel version is 10 Euro more expensive ... and it looks very nice and shiny, but ... we like copper ;).
If both are fine for you, why pay more?
Well, its always like that, you have the same price and charge the manufacturers a resellers fee, therefore it is more profitable for them to sell to the end users ... at least in the beginning of announce.
Regarding $780 price - it is not THAT bad for many people, for example I paid only $62 for step-up from 8800GTX to 9800GX2, now it is not too bad to pay $239 for the waterblock looking at 85C load temperature ... because the first payment for 8800GTX is already in the past.
I am not sure that we definitely need to volt mod the card, it has enormous overclocking possibilities ... some people run it at 812MHz instead of the stock 600MHz without any volt mod. We will see.
It is more ridiculous to pay $300-$400 for 2 gb of DDR3, overclock it to max and have worse read-write-copy-latency results than for "updated" overclocked DDR2, for which you paid <$100 having 4 gb ... IMO
Isn't it a bit ridiculous to pay $650 for 2 1 gb sticks of DDR3-2000, which at least work and finally outperform the overclocked DDR2?