i think trade is the best way, because on some servers ( like my current one, elmorelab ) admin started posting pictures/proofs of catching people buying and selling non grade recipes for hilarious amounts of money :) so there it is haha
such things do work on servers which do not have classic as their main source but are hf/god/whatever adapted to classic version
if the files are l2c originally, such tool do not exist so far
It seems that Interlude or interlude - like chronicles attract the most attention nowadays.
Lowrate - elmorelab ( way closer to IL than to later chronicles ), reborn
Middlerate - warland, l2dex.
All interlude projects literally have their base
On Sale Queen Ant's Ring +4 $100
On Sale Zaken's Earring $60
On Sale Draconic Bow Focus SA +11 - $ 45
On Sale Tateossian jewels +10-11 $40
Prices are final.