The breadth and depth of studies on e-fuels' techno-economic analysis (TEA) elucidate a promising yet challenging horizon. Production efficiencies, capital and operational expenditures, and break-even points differ based on regional considerations, available technologies, and evolving market conditions. As Europe and other regions gravitate towards e-fuels as a pivotal component in their energy transition strategies, the techno-economic narrative will likely witness further complexities and refinements. Crucially, while technology and economics are central, the alignment with policy, societal acceptance, and environmental considerations will be paramount in realizing the full potential of e-fuels.