I really cannot make smart decisions.
I spent 6500 coins on every available powerup for a contest wherein I already won the Mega Stone before.
So what will I get out of it? In all likelihood, two Jewels. Which, given that I've spent all my Jewels before, will add up to 6000 coins.
That's a net loss unless I get the Mega Speedup or something.
Which I probably would've had a better chance at if I actually looked at the leaderboard before jumping in and saw all the top-5 teams were Hera teams and not the risky M-Blaze one that I was using.
See this is why I'm not in finance anymore.