A popular two-book set packed with business tips. Highly recommended for sole proprietors struggling with customer acquisition, marketing, and store management, as well as sales and promotion staff aiming to increase sales. "48 Tips for Promotion: Sales Triple Even with Zero Budget!" Author: Toshio Sakai Price: 1,500 yen + tax Size: Approximately 21cm x 15cm (equivalent to A5 size) Covers modern advertising methods utilizing SNS (Twitter/blogs) and websites. "77 Promotion Ideas to Increase Sales Without Spending Money" Author: Jitsuko Makiya Price: 1,400 yen + tax Size: Approximately 19cm x 13cm (equivalent to B6 size) Features unique ideas and specific examples of customer service and presentation based on psychology, such as "How to sell potato chips for 5,000 yen?" Both books are filled with practical techniques that can be used immediately starting tomorrow. Please also use them as study materials for starting a business, side jobs, and operating an online shop. Please check the condition in the images. Free shipping, anonymous delivery, and will be shipped quickly within 24 hours. Please feel free to ask if you have any questions or would like additional images.