that i found on another forum :
"well i have a theory that worked for me, but it was a long time since i played.. but still here it is: this theory has so far only worked on bows, so get a bop or a soulbow.. buy the first enchant from a player, dissarm the weapon and enchant it directly.. now to the next enchant u have to buy from a different seller and enchant it direcly after buying it. i made a bop from +4 to +10 and a soulbow from +3 to +15! obs! the highes soulbow so far in l2 history was owned by me (BLOND on devianne)hehe, ask about me if u play on dev, i am sure i have som credit from there. let me post some screenies now as proof. obs that i buy enchants from diff player everytime i enchant! aww crap.. i am not much of a forum guy, add me on yahoo: longvit_1@yahoo.com and i send u the ss or show me how to add a screen ^^"