Thanks for both your inputs guys - you both actually make good points.
The card was supposed to be my brother's, who I bought it off a few months ago when he went for a Ti instead. It only arrived a couple of weeks ago, but like I said, not risking it in my currently semi-fried motherboard. So I'll probably not be able to return it for a full refund to the original vendor, but can probably still sell it for near-retail as it's still sealed and all.
With the 1070 releasing globally in a little over a week, I suppose it all depends when we'll get local stock over here (and that's just founder's edition). If it's a month+, I might have to sit without a PC for awhile as this thing isn't going to last. It's already on the freezing-every-hour-or-so stage. Don't get me wrong, I'm fine with waiting for a month or two, keeping in mind waiting also brings down the resale value of the 980, like @
Sliddqvist rightly said. But the worst case scenario would probably be that they sell out before I can get one, and then the cycle repeats itself.
I guess one thing to keep in mind, or at least consider, is how long the card is intended to last. I won't be replacing it in 1 year (thing is still semi-premium-priced, plus I have to replace my entire PC this year, so further upgrades will have to wait another year or 2), so the 980 might be pretty crap by 2018. Then again, it might cope with DX12 developments. I have no idea what NVidia is planning, but my gut feeling is they won't care much about the 9-generation when it comes to that.