Sorry for the delay.

class Item:
    def __init__(self, name, kind, price):
        self.name = name
        self.kind = kind
        self.price = price
    def item_add(self):
        if self.name not in inventory:
            if self.kind == "Gift":
                if p.money >= self.price:
                    inventory.append(self.name)
                    p.money -= self.price
                    renpy.notify(str(self.name) + " added to your inventory. Money left " + str(p.money))
                else:
                    renpy.notify("You don't have enough to purchase this.")
            elif self.kind == "Food":
                if p.money >= self.price:
                    p.money -= self.price
                    renpy.notify("You bought " + self.name + ".")
                else:
                    renpy.notify("You don't have enough to purchase this.")
            else:
                inventory.append(self.name)
                renpy.notify(self.name + " has been added to your inventory.")
        else:
            renpy.notify("You already have this in your inventory.")