Price is any time to up and down. So it not easy to check the price. People check the price before invest or sell any coin check the market price. Market price information help for plan to work. It good future invest. So choose the best coin in the market then buy and hold it.
Planning is really effective to know what you do next. Like when you are buying coin maybe better you have specific target and once it will hit that just buy more that's also to the selling like buying have plan also. Price is really unpredictable because sometimes it will increase but it will decrease too. But now in the last 2 weeks ago the value of the coins are stable and Im happy for that.