Let's do some basic maths. Sapphire cost 287$ and gives me 50 DACS. Which, according to the crowdfunding page are 50 months of play time. Of course, we have no idea how much it will cost per month to play but let's work out how much my 50 DACS might be worth.
50 months of play time is 749$ @ 14.99$ pm (current world of Warcraft/EVE online monthly cost)
50 months of play time is 450$ @ 9$ pm
50 months of play time is 250$ @ 5$ pm
*this doesn't take into account for bulk buying 3m, 6m.
Let's say it is around the same price as EVE/WOW.
So hypothetically speaking if I could sell my DACS in the real world (which you can't) I've essentially made a profit/saving of 462$ (obviously no one is paying full price for unofficial DACS when you could buy official for the same price.)
Of course, this is based on the game staying P2P for the required 4.1 years. For comparison, Elder Scrolls Online went F2P on the 17th of March 2015. Roughly 11 months after it released on 4th of April 2014. Of course, ESO going F2P was to be expected as you can't expect fans of Morrowind to pay monthly when past standalone games where B2P.