Yes, It is. In cryptos it is never too high to buy. Because it is growing and eventually grow further. We see that in fiats we have the governments printing new money causing inflation but in cryptos most of the coins have limited supply being generated on daily basis and the concept of halving keeps their price stable. If you can buy and forget the cryptos you have in stock for 1 year then check exactly at the same date next year and you will see what you have earned is a lot more. That's just one way of making money people have different strategies and they work for them but 1 rule they all have in common Sell on profit only.