You shouldn't buy or sell anything just based on other people's opinions and study the each coin yourself. You'd google the coin's official website for news and there's also twitter account and Reddit page for all the major coins. People said it's too late to buy IOTA when it went to 2$. Then at 3$. Then at 4$. Then at 5$. If it reaches 10$ by the end of the month I'm sure it's too late then as well. Just because some user in a discussion forum says it's too late doesn't mean anything. Nobody knows where these coins go and when - even Bitcoin surprises analysts all the time. IOTA has rocketed a lot now but even if it'd crash 50% tomorrow it might be 500% up next week anyway.