<![CDATA[Selling prices, ingredient costs, and digital promotional activity are closely connected business decisions, but their relationships with observed sales require joint assessment. This study examined these relationships among 180 culinary microenterprises in Jambi City. A cross-sectional survey used stratified random sampling between October 2025 and April 2026. The main product was defined as the product contributing the largest share of turnover in the preceding month. Monthly portions sold were analyzed using negative binomial regression with operating days as a logarithmic offset. The adjusted model included business age, workforce size, online ordering availability, and product category. Mean monthly sales were 905.87 portions, and mean sales per operating day were 36.34 portions. Each IDR 1,000 higher selling price was associated with a lower sales rate (incidence rate ratio [IRR] = 0.9301, 95% confidence interval [CI] 0.9121–0.9484; p < .001). Ten additional digital promotional publications were associated with a higher sales rate (IRR = 1.1401, 95% CI 1.0846–1.1985; p < .001). Raw material cost was not statistically significant in the principal adjusted model (IRR = 1.0393, 95% CI 0.9997–1.0806; p = .052), although it became significant after excluding the highest 5% of sales rates. Negative binomial regression accommodated substantial Poisson overdispersion. Price and promotional activity were associated with sales rates, whereas the cost association was sensitive to sample restriction. These observational findings support coordinated business monitoring without establishing causal effects.]]>
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