If you are interested in rares and such, this is for you. So since the once only not only guarantees a perm rare, not to mention it’s only $35 bucks roughly when it used to be $50, I say it’s worth it. Once you get that rare, you also get roughly 50 orichalcons to which you can use medals to buy tickets for any box in the medal shop (which is about 5 orichalcons). So you are pretty much guaranteed at least two-three permanent rares depending on what you get. I recommend the Grey BF Boxes, gave me three perms out of like 4 boxes. I wasn’t really counting. Some players didn’t know this information. Hope this helped.