Core Viewpoint - The high repair costs for hearing devices, particularly the K9 and K5 models, have raised concerns among consumers regarding the transparency and fairness of the pricing structure in the electronic learning product industry [1][5][10]. Group 1: Repair Costs - Consumers have reported that repair fees for components can exceed half the price of the device itself, with specific examples showing repair costs of 380 yuan for a K9 device purchased at 698 yuan [3][4]. - The repair costs for similar issues vary significantly, with some consumers reporting fees ranging from 200 to 300 yuan, which is close to the original purchase price of the devices [4][8]. - The K5 128G model's circuit board repair cost was calculated to be 34% of the device's price, highlighting the high repair-to-product price ratio [4]. Group 2: Customer Service and Transparency - Customer service responses have been criticized for lacking transparency, with some consumers receiving inconsistent information regarding repair costs and procedures [1][9]. - There are reports of customers being able to negotiate repair prices, which raises questions about the standardization and fairness of the pricing system [7][8]. - The prevalence of the explanation that issues are due to "water damage" has been noted, leading to consumer dissatisfaction and perceptions of unfair treatment [10][11]. Group 3: Legal and Regulatory Context - Current regulations do not set a legal cap on repair costs, but laws exist that require repair pricing to be "reasonable," taking into account parts costs and market comparisons [5][12]. - Legal experts suggest that if repair prices are significantly higher than market averages, they may be deemed unreasonable, potentially leading to legal repercussions for the company [5][12]. - The need for a transparent pricing system and quality assurance in repairs is emphasized, with recommendations for companies to publicly display repair cost standards [12].