struct	ItemCost	# All definitions here are intended to be overriden in code, but provide correctly-sized stubs for programs that don't care
u1	is_sellable
u1	is_sellprice_5gil
u6	exponent
u8	mantissa	# buy_price = mantissa * int(pow(10, exponent)); sell_price = -1 if not is_sellable else (5 if is_sellprice_5gil else buy_price/2)

struct	EquipStatBonus
u1	is_stat_bonus	# 0 -> data is elemental bonus bitfield; 1 -> 4bit toggle fields for affected stats, 3bit selector of bonus enum
u7	data	# Meaning changes based on is_stat_bonus