An alphanumeric string, often distributed electronically, allows purchasers to obtain a price reduction on merchandise from a specific bookseller. This incentive method encourages sales and is typically entered during the online checkout process to recalculate the order total.
Such promotional offers can lower educational expenses for students and provide budget-conscious consumers access to literature and other resources. Historically, these were circulated through printed materials; however, the digital age has shifted distribution to email, websites, and dedicated coupon platforms, enhancing accessibility and reach.