How much did the first aircraft of the navy cost?

The first aircraft of the navy, specifically a dirigible named the "USS Shenandoah," had a cost of approximately $5,500. This figure reflects the early 20th-century context of naval aviation, when costs were relatively low compared to modern standards. The historical significance of this cost lies in how it marked the beginning of naval aviation and the investment in air capabilities that would grow substantially in the ensuing decades. This early investment emphasized the navy's forward-looking approach to incorporating technological advancements in warfare and reconnaissance, setting the stage for future developments in naval aviation.

In this context, the other options represent amounts that are higher than what was actually recorded for the initial military aircraft, demonstrating how the financial landscape of aviation technology evolved over time.