For example, market is growing. From 7200 EUR to 8020 EUR, straight line up, and then suddenly someone starts to offer his BTC for 7850 EUR. Why?
the market moves because these someone
s are buying and selling their coins. in other words at any time in the market there are some people who are selling and some who are buying
Why for 7850 if he can sell it for higher value, over 8000.
why for 8000 and not 8500?
why for 8500 and not 9000?
you can go for eternity!
in any case when you are trading you want to get in and out based on your speculation. someone who is selling his coins at 7850 speculated that price is not going higher than that. and he is selling that amount to someone else who speculated that price is going a lot higher than 7850.
there is no right or wrong here though even if price goes up or down. it is all trades and can give you profit if you made the right decision.