Most of the "getting in or not" decisions are rather personal opinion and quite a bit of lottery what comes to buying DRK or any cryptocurrency.
Dark is a kind of a pioneer of anonymous payments applications, so it would be logical to think that DRK price is going to rise on long term.
But...
All the new technology and beta software has its risks. Dark has its risks too.
There is next to no solid indicator or fact which could tell us for sure if price goes up or down. For anyone who considers to invest a large amount of funds in to DRK or any cryptocurrency, i suggest you do your homework, read and try to understand to the concept and ideas behind  the coin, try to assess if the dev is professional or not and make your decision based on your risk and reward ratio.
Dont just buy and hope. Make a plan before you buy. Acknowledge the risks you are taking and think if you really belive that you will end up in profit.
If you do that, then most of the times you will probably succeed.