It’s summertime and every weekend you’ll see the signs—“Huge Garage Sale,” “Monster Yard Sale,” “Moving Sale” or simply just “SALE” scrawled across neon-colored poster board. More than 60 million of us shop at garage sales, spending close to $1 billion each year. We’ve hosted dozens of garage sales—single-family, multiple-family and huge fund-raiser sales. Each time, we’ve fine-tuned our strategies and improved our execution. You can make money, but without careful planning and preparation, you’ll spend more than you’d like to pay physically, emotionally and financially.