UNIHEZ JOURNAL OF CONTEMPORARY RESEARCH

The rapid expansion of e-commerce has intensified price competition across online marketplaces, making it increasingly difficult for consumers to identify the most cost-effective purchasing options. This study presents the design and implementation of a web-based price checking system developed to support real-time price comparison within the e-commerce marketplace. The proposed system aggregates product price information from multiple platforms, including Jumia, Konga, and Amazon, thereby enabling users to compare prices and make informed purchasing decisions. The system was implemented using modern web technologies—HTML5, CSS3, JavaScript, Bootstrap, and ReactJS— to ensure responsiveness, scalability, and cross-platform accessibility on both mobile and desktop devices. A modular system architecture with simulated API-based data retrieval was adopted to emulate real-time pricing and product availability. System performance was evaluated using functional and performance testing metrics, including response time, price accuracy, and user experience. The results indicate that the system provides a fast, reliable, and user-friendly interface for price comparison, contributing to improved transparency and consumer trust in online shopping. This study highlights the effectiveness of web-based price comparison systems in enhancing consumer decision-making and promoting efficiency within e-commerce ecosystems.