I got about 3 cents of SPS while I spent 2 cents on DEC to enter the tournament and way back 50$ in packs. It looks like it mostly is a game to play and not really to have any kind of potential to actually make a profit. I also feel you kind of need to be in a group or have a bot that comes up with the best solutions to rank as high as possible.

First impression, is that it's a game to have some fun with but to avoid throwing any money at.