Electric Vertical Take-Off and Landing (eVTOL) aircraft are on the brink of revolutionizing urban mobility by offering a sustainable alternative to ground transportation in congested cities. However, despite their potential to redefine urban air mobility (UAM), the operational costs of eVTOLs present significant challenges that must be addressed to ensure their commercial viability and widespread adoption. Understanding these costs and exploring strategies for their mitigation is crucial for stakeholders across the aviation industry.