You are literally paying by the foot. Your wallet grows lighter with every inch the drill goes down. A shallow well (20–50 feet) in sandy soil? Cheap—maybe $2,000.
A deep well (300+ feet) in solid granite? You'll need to sell a kidney. Those can hit $20,000 or more. The drill might even laugh at you.
Fun fact: some wells go down 1,000 feet. That’s deeper than the Empire State Building is tall. And every single foot costs money.