I'm currently running Rise of the Runelords and have a player who is wanting to craft magic items. He is poring over the item creation table to try and make items that basically do the same as existing items for cheap.
I remember a quote here, by I think Jason Buhlman, that if the table would allow you to create a magic item that does the same thing as an existing item but at a greatly reduced cost to use the cost of the existing item. Unfortunately my searchfu has failed me and I cannot find it.
Can anyone point me where to find that? I could just make a GM ruling to the same effect but would like to have the dev quote to back that up anyway.