I have prepared a table that I added here below, which contains the statistics of the bitcoin value growth in percentage during the last 3 years : 2015, 2016 and finally 2017. We can clearly see that the bitcoin's value has achieved an exceptional growth this year, knowing that the value is multplied in 4 in 6 months. So, in your opinion how much will be the growth in percentage during 2018 ?
A double on the price of 2017 will be fair enough for 2018's price of bitcoin. Bitcoin might end up this year at $20,000 which is 2000% from the previous year but we can't say that it will happen on the next years because of many factors. More people are now investing on it but more people will be hesitant on buying the coin at the price of $20k so most likely they will just invest on some part of it and we can't have the same increase that we experienced this year. $40,000 is a conservative estimate I believe.
Yeah I'd say the absolute bottom estimate for end of 2018 is a doubling of 2017. Since it was only at $1000 to start 2017, a doubling in 2018 would represent the same growth in dollars as this year plus $1000. If anything the growth should be much lower in percentage but much higher in dollar value because network effect and adoption curves are never linear, and I don't see anything coming to suddenly hurt Bitcoin in a major way so growth should continue. So $1000 more growth, putting it at just over double end of 2017 price ($30k-$40k) is a good baseline target. Though likely the reality will far outstretch that, I expect it'll more likely quadruple rather than double in 2018. So $60k wouldn't surprise me at all.