A repricing rule is where strategy meets automation. The merchant decides how prices should respond to the market, the rule encodes that decision, and the system applies it across hundreds or thousands of products without further intervention. The quality of a store's repricing comes down almost entirely to the quality of its rules.
A useful repricing rule has at least four parts:
A single-line rule expresses one condition: "match the lowest competitor minus 1%." It works fine when the catalogue is uniform, but most stores have products with different competitive dynamics. A bestseller and a long-tail SKU rarely deserve the same logic.
Multi-line rules let you stack conditions and resolve the final price as the lowest, average, highest, or closest match across them. That gives you a single rule that can handle "match Competitor A on premium SKUs but follow the average of Competitors B and C on entry-level products," without splintering into dozens of separate rules.
A repricing rule without a floor is a rule that will eventually lose money. If your competitor decides to dump inventory at half price, your rule will follow them down without complaint. The floor is the line that says "match the market, but never below this number." Most production-grade systems offer multiple floor types: cost-based, margin-based, fixed price, or percentage-based thresholds that escape to a backup rule when breached.
Example: A homewares store sets a multi-line rule for kitchenware: line 1 matches the lowest competitor minus $0.50, line 2 enforces a minimum of cost plus 35% margin. The rule resolves as whichever number is higher. When a competitor drops a chef's knife to $32 and the floor sits at $38, the rule respects the floor and the system flags the SKU for review instead of racing to the bottom.