I only spent the gems because I read on here that you can sometimes get reset emblems from completing the last stage on the emblem trials. I can usually only finish the first two. Occasionally I finish all 3 and I just get a trainer hero. I’m really going to need some reset emblems soon though… so I took a risk. Luckily it paid off.
I guess it was probably worth it? I’m assuming it would have cost me more than 75 gems to buy the emblems directly.