I am talking out of experience now, I remember having a coin called regal coin in my possession which was worth about $10 after it hit the exchange and holding the coin to get to $100, but I was shocked when I woke up one morning and saw that the price of regal has dumped from $10 to $1, and very worthless as of today.
Every factor is important! Like you say Fasdorcas, some judge it by the price, others by team behind, some people look community,
whitepaper, popularity, etc.
From all the factors form me community is the most important. How team interact with community, how much community is
involved. I also like to see public reactions.