Marot will probably ask for the MW cold iron heavy mace, as his is only normal materials.
I think the price of the mace should be more than 312gp, as a non-cold iron MW heavy mace costs that much. Cold iron weapons cost double, so it would either cost 612, 624, or 324? Not sure if the MW gets doubled or not... Stonegod can probably comment on that.
I also wouldn't mind a scroll of cure light or two, so I can help out with healing others in combat if needed.
Plus, the wand intrigues me.
Between Deceive Item (take 10 on UMD anytime) and +14 UMD, at UMD = 24, he can use any wand, cast any scroll of 4th level or lower without any problem. Plus, it would give him something else to do besides blasting everything in sight.