Pricing structures are crucial for businesses as they balance market demands with strategic objectives and help illustrate product value, drive customer attraction, and enable product exclusivity. Different pricing structures include flat rate, tiered, pay-per-use, penetration, bundle, psychological, premium, and variable pricing. To choose the right pricing structure, understand your customers, conduct market research, evaluate competitors, understand your product value, keep pricing simple, and be adaptable. A successful approach involves doing homework, defining success metrics, establishing a base price, modeling business growth, and experimenting with different strategies.