Rurouni Kenshin: 3
Rayearth: 4 (it's a bit battered, but it is one of the bigger, more expensive manga)
I take Paypal, concealed cash at your own risk, and I'll trade for MARS (not ones with Masao though) or... would 2 of the Japanese Full Metal Alchemist for one manga make sense? I've seen Japanese manga sold for usually 3 or 4 dollars here, so... I would really like to buy some FMA too, if no one wants to trade.