According to a price guide, the phats is worth: Blue partyhat 360,000,000gp - 400,000,000gp ( :wall: ) White partyhat 260,000,000gp - 275,000,000gp Red partyhat 212,000,000gp - 220,000,000gp Green partyhat 170,000,000gp - 176,000,000gp Yellow partyhat 149,000,000gp - 155,000,000gp Purple partyhat 138,000,000gp - 147,000,000gp So that should be about 1 373 000 000gp. But a whole set should be a bit more expensive, so 1,4 billion.