What is a collection of documents designed to generate sales, including brochures and sales flyers called?

The term that best describes a collection of documents intended to support sales efforts, including brochures and sales flyers, is "collateral." In the context of sales and marketing, collateral refers specifically to materials used to inform and persuade potential customers, facilitating the sales process. This can include brochures, flyers, data sheets, and other types of documentation that provide valuable information about a product or service.

While "marketing collateral" is a similar term, it emphasizes the broader marketing context rather than sales specifically. The choice of "sales toolkit" suggests a collection of resources for salespeople that may not solely focus on the printed materials. A "promotional package" usually refers to a collection of items packaged together for a specific promotional effort but not necessarily limited to documents exclusively designed to assist in generating ongoing sales. These nuances clarify why "collateral" is the most appropriate choice in this case.