Rescuing golf balls is like treasure hunting with a sporty twist—dive into ponds or stroll through the woods, and you’ll find golf balls just waiting for a second chance. Golfers love a deal, and you’ll love turning those "lost in the rough" finds into cash while getting some fresh air! You can get balls from Golf Courses just make sure you negotiate with local courses to collect balls from their water hazards and wooded areas (sometimes they’ll let you for free, or for a small fee).
You can sell your findings at places like LostGolfBalls.com just make sure you have a decent stash before selling though. You can also sell on Facebook marketplace where you can post local listings for quick, no-shipping sales. You can make money doing this like Shaun Shienfield

The founder of Found Golf Balls, who recovered and sold millions of golf balls from top courses in the United States and there’s Glenn Berger who made about $15 million by diving for lost golf balls in Florida courses. He sells over a million balls internationally per year.

Money grows on balls.
Interesting
Very interesting!
thanks a lot !!
Thank you for sharing tips