I still confused about what makes token become expensive. Except for supply-demand, what else which caused some token like erc20 become valuable? I look at about how to create ethereum token and I think almost all of them have the same quality, and security. So what's the answer? what make them so valuable?
Supply and demand is not the deeper reason why there is an increase of value to the altcoins. The primary reason is that there are several altcoins whose products are really amazing and very helpful to the real world. The vision and goals and performance of the altcoins are the reasons why there are so many people in the world who are attracted to invest on them. Without a working product, a truly working team, etc, you cannot expect any altcoin to become valuable.