LOL I have been a BTS member for 3 years now? I've paid those 3 times. It's only beneficial if you live in S.Korea as you can enter music shows, get early access to buying tickets for their concerts, etc. But it is nice to have the membership package with all the stuff and ID with your name/bday on it. I don't know how that other groups does it. You could give it a try. I'm not sure if they the do international shipping too, but if they do then you can give it a try. Shipping is usually pricey, and the waiting for the membership to come via mail can take a few months or so. This is just from my experience as a BTS ARMY member. Thank God they made it easier now, but I think the other memberships are via Interpark...maybe. lol If you have any other questions, just let me know.