The price of alctoins depends from demand for it and the prospectives of altcoin for its future growth.
It is very improtant to check how usefull will be altcoin in the future to evaluate its prospectives.
In some cases the idea of going to the market is there but many times it changes. There is an idea about AJ market. If it is mentioned here then it seems that it does not depend on the market position. But I think it would be nice if they could still be seen here.