Hello There :) now look guys i found that on a l2 site and whan to share it with you...Let's Start!!!
* Needed, little bit of adena (500 will do)
* Go to a magic shop that works buy the most expensive stackable item they sell there, buy 100 million of the item at a time, u'll see it costs a lot (don't press ok yet)
* Add 100 million again, by now the number should be negative...
* Keep adding and removing items till it costs what u can afford, press ok, sell items to the shop, voila, lots of adena...