FFVI Worlds Collide

Out of curiosity, does anyone know how complicated it would be to change the upper bounds for costs on items? If the current cap is 65535, how hard would it be to change it to the next highest byte size (Oh man my programming degree is failing me now)?

It's feasible as the item price is the last two bytes of the item data. It would be as simple as expanding the item data (add 1 byte to each entry) to allow a 24-bit price and relocating the item data block somewhere else in the ROM. There would be some shop code to modify as well as an example (and maybe some menu code too to display 6 digits prices). The reason it has not been done in any hack to my knowledge is not because of the difficulty to do so but mainly because doing so would break the current editors when wanting to modify prices (such as FF3usME or FF6Tools).