At the end of 2017 probably no one is guessing, since this is a very short period. But for 2018, it all depends on whether they stick to the roadmap. But at the moment, it seems to me that 25,000 - 30,000 Satoshi, can be worth it, it's an average price, and I think it's justified. I honestly expect higher, though, 60,000 Satoshi.