POS coins are almost  all of them are shit coins. On long run they goes to 1 sat. If not yet stay and wait.
You have to spend some money for electricity
For example if you buy all xjo coins you must able to calculate how much electricity and hash spended from miners.
There must be a limit for circulation for coins. The much rare the more expensive it is.
And if there is no premine than it means dev is giving his/her love working at coin software.