The study examines the economic impact of linguistic flag words in online marketing communication. Using a dataset of 15,663 real sales across Slovak, Czech, and German platforms, the analysis combined AI-based text classification and manual validation to identify four linguistic categories: urgency, exclusivity, discount, and identity. Descriptive and inferential statistical methods, including Welch’s t-test, were applied to evaluate price differences between products with and without flag words. The results confirm that linguistic elements significantly influence pricing strategies and consumer perception – identity and exclusivity increase perceived value, while discount and urgency support short-term sales dynamics. The study highlights the need for hybrid approaches combining Artificial Intelligence with human linguistic interpretation in digital marketing contexts (Kalaš/Lipták 2025).