be VERY careful with things like that, because alot of those sites that offer quick, easy n relatively "free" NX is usually a scam. I've seen some people get banned form the game because they tried to go to those sites
Uh try actually buying the nx cash online with a paypal account. Or try buying the nexon cards at shoppers or any other near by grocery / convenient stores. :P Rite now I am looking for Ijji Game cards but I can't find them :S Ive been looking and looking zzz.