Whether it's an advantage or a disadvantage?
that is where you make money in trading. If the price is constant there will be no money in trading. The price will always go up and down, it is your job as a trader to predict when it will happen by reading the news or analyzing the charts.
exactly for this, we should make a good prediction with watching the chart movement, make analysis with this, make decision in how much price we want to buy. its good when we see that there is ups and downs in the price and we can join in the market to buy and sell and take a profit. but be careful for the correction price because its not always shown in front of us.