u/Painter-Fantastic

I bought a few $25 packs a few weeks ago, just for fun and to see how Arena Club was as an app. I had seen people talk about the 100% buy back, but figured it was one of those things that “don’t really happen.” Well, I got this email a few minutes ago… so I guess I just wanted to ask about how it works? If I accept the buyback, are there taxes still? And most importantly, is it legit?