This was also my argument/question a while ago and I did not get a precise answer on this. Let's take Zimbabwe as an example, because they had a Fiat crisis in their country (still has) and some people there started to buy bitcoins to protect the value of their Fiat savings that were being destroyed by Hyperinflation.
As a result of that, the Bitcoin demand rose sharply in that country and it was reported that people even paid up to $25 000 US for bitcoin. Can we then say, the All-time-high price is $25 000, because a small country and a few 1000 people paid $25 000 for it?
Nope! Zimbabwe does not justify the Bitcoin Price.
We're talking of the general bitcoin price globally not just Zimbabwe
Who are the "we" that you are talking about? Could you for some reason think ..that the people who replied to this thread has some authority to decide what the All-time-high should be? (The responses to this thread comes from people with opinions, not from people with authority over millions of Bitcoin owners)
The best measure for the "average" Bitcoin price, should come from a combined price that are sourced from exchanges that allows customer from all over the world. (Example : Take the price from say, Bitfinex / Bitstamp / Kraken / Coinbase and some more exchanges from all over the world and divide that amount by the amount of exchanges that were used to get the average.)
Example : Bitfinex ($19500) + Bitstamp ($19200) + Kraken ($20 000) + Coinbase ($19800) = $78500 divided by 4 = $ 19625 average global Bitcoin price. (The value should be in the same Fiat currency and the more data sources used, would represent more countries for a global price.)
That would be a better representation of the global Bitcoin price and what the all-time-high should be.
The US Dollar can then be converted to any other Fiat currency, to be used by people with their local currency.
