The prices has gone up because People will be looking to SLI their EVGA SC and it is sort of a last buy. I'm not agreeing with the price and this is why I actually sold my EVGA SC and bought two non references cards when I saw EOL on them.
The reference cards are all identical anyway, buy two non-EVGA reference cards and flash the evga sc bios, that's what I did.
Both can hit 1400 core (who knows what that makes the boost) so I'm quite happy with them