Mike’s Bikes is working on securing new pricing for the tires they put on their bikes. Their supplier has raised the price of each tire to $12 from $9. Mike’s intends to sell 1000 bikes at $150 each. Since this supplier has the best tires Mike’s has found, they have decided not change suppliers, and this is the lowest price they can negotiate. How much more will Mike’s be spending on tires if they sell 1000 bikes?