The 780 is actually not a good GPU. It has aged terribly, so I don't know why it is being compared to the 780 Ti. Most websites don't even include the 780 in comparison charts, so it is hard to show how bad it is, but it is *well* below a 290 these days. I believe Sweclockers phased out their 780 last year during spring. TPU no longer include it in their charts either.
A 480 would not be a "sidegrade". Not even close. A 1060 even less so.
So this is the real problem with this entire thread. The issue here is not the 480, it's that your national market is garbage.
If you pay 350 euros for a 480 then your prices are fucked up. Here in Sweden, the asking price for non-ref 480s are around 260-280 euros.
Thus, the problem isn't the 480 in your case, so I don't know why you whine about it in your title of this thread. The problem is your internal market. INB4 "yes but all prices are local". I know. But I'm just pointing out the illogical/incoherent title. OP is blaming 480 in the title. He should have written it "I live in country with a shit-tier national price market. Let me whine about it".