I think volume is not the principle criteria to judge upon when buying alts because most of the exchange use bots so you can have a wrong idea about it if you don't look and research about the project you want to engage in. When I buy tokens, I really don't look too much in this detail instead I look at the goals and idea behind it, if it's unique and gives a new integration of cryptocurrencies and blockchain, not just a copy, also chat with the core team is very informative it helps you know if they are serious, sold and trustworthy.