During Tax Year 2023, Marco had extensive renovations done on his home. He owns the home, it is his principal residence, and it is located in the United States. He purchased two exterior doors at a cost of $1,000 each, windows for a total cost of $2,400, and a home energy audit for $550. All property installed meets the applicable energy efficiency and all other requirements. His tax liability is $4,100. What is the amount of Marco's Energy Efficient Home Improvement Credit