Actually the sales for titans were very, very good. People that normally moan about value for performance are just people that can't afford what they're looking at. Which they're entitled to moan about. But if you can't afford it just move on, you're unlikely to get anywhere by getting irritated about it. In any case, you're not missing out on much at the moment. Drivers are terrible.
For most people who are not willing to cough up £800+ for a graphic card, they certainly have the choice to show Nvidia the finger and walk away pretending that card never existed. However, the problem is Nvidia used the Titan as a tool to artificial inflating the price of the normal sub-£500 range cards. Back then I expressed my concern that with so many people willing to pay the silly price for the Titan, it may lead to a knock-on effect on bumping up the pricing of the normal range cards...and guess what? That's really what happened.
Some people have said along the line of "well, if you can't afford GTX780, stop your whining and buy something that you can afford"...but the problem is that for the cheaper card, people can now get what...a GTX770? Which is exact same price range as the 7970, which people could have gotten 12 months ago with same/better performance (game and res dependent)?
So in a way, graphic performance progression in terms of performance vs price has pretty much
stood still for the pass 12 months. For the price of £330 at around 12 months later (after the 12.11 driver), there should be no excuse for the GTX770 to still be beaten by the 7970 is ANY situation, other than in AMD optimised games.
But of course, some people failed to or refused to recognise this being an issue. People willing to ignore value for money and drop £800+ on the fastest meanest graphic card yes that is their choice and it's nobody's busy I agree, but that doesn't mean they can talk down/look down on people for pointing out that they are now essentially paying £300 ish for a card that should now only worth £220-£260, and a £500+ for a GTX680 "same tier replacement".
People need to stop comparing the the GTX780 to the Titan, and look at the reality of the GTX780 is merely 10-40% faster than the GTX680/7970 15 months later and ask for £150 extra, as if it was same gen card launched side by side with the GTX680 15 months ago.