Reposting this from a few days before.

Originally Posted by Ampchan

Honestly... that is not worth it tbh.
Although... that is a 5.8% chance of rainbow (0.5% chance, 12 rolls) versus 4.9% chance (1%, 5 yolos)
The gold chance is meh though with a 52.4% chance of getting 1 (or more) (12 rolls) versus 53.0% (5 yolos @ 14%).

To be honest, they are about the same. The step 3 and 4 is a joke though.
Priority also has no bronzes, so priority would be the better bet when it comes to bond crystals.