Build a Drone
Each choice adjusts how parts are scored for this goal.
Commercial flights need FAA registration and Remote ID at any weight; recreational flights need them at 250 g or more.
Prices are the lowest in-stock price at confirmed store listings, so they can change.
Scored against a hover-time estimate from the battery and the all-up weight; real flight time is shorter when you fly hard.
Up to 6 parts.
Their price is unknown, so they are left out of the total and the budget check, and the result says so.