I noticed this phenomenon. Often someone buys up all the proposed tokens with a small amount of trading (for example, look at SMT on hitbtc this night), and after a few days these tokens go up in price very much. Is it worth buying such a token?
It depends on the project's roadmap and the community support. There are some tokens that are worth buying in low volume due to their beautiful progress on their roadmap and keeps the community updated with their developments.
If I were in this situation, I'll just invest an amount that I can afford to lose. In the world of cryptocurrency, risks are always present and expect the high volatility of it. There's no doubt that some low-volume tokens are going to get their price up due to the impressive roadmap and team that they have.