As at the time this post was made as stated by OP, the price of btc was around $54k and did get to the highs of $60k+. Within this range, profits where made for being in the market. After the highs of $60k+, the price then went down to the lows of $34k and even below. These lows made so far are from fundamental analysis from the government affecting the use of Bitcoin/crypto currency within it's environs.
So, one who bought earlier will face losses and think s/he has made the worst mistake, but with patience, the market will bounce back. Where I am trying to hit at is no best price mark to make a buy/invest, cause anything can happen at anytime, just be ready to face the challenge when it comes, that's what makes it fun.