Simulate dynamic repricing strategies. Enter competitor price, offset, and min/max constraints to find your optimal price and projected margin.
Dynamic repricing automatically adjusts your product price in response to competitor pricing changes. On marketplaces like Amazon, winning the Buy Box often requires matching or beating the lowest competitive price. But pricing too low destroys your margins.
This calculator simulates a rule-based repricing strategy. You set your competitor's price, an offset (how much below or above you want to be), and minimum/maximum price constraints. The tool calculates your dynamic price and shows the resulting margin.
Use this to test different repricing rules before deploying them in a real repricer. Fine-tune your offset and floor price to find the sweet spot between competitiveness and profitability. Whether you are a beginner or experienced professional, this free online tool provides instant, reliable results without manual computation. By automating the calculation, you save time and reduce the risk of costly errors in your planning and decision-making process. This tool handles all the complex arithmetic so you can focus on interpreting results and making informed decisions based on accurate data.
Repricing without constraints can lead to price wars that destroy margins. This simulator lets you test offset rules and price floors before going live. It shows exactly what happens to your profit at different competitor prices, helping you set safe, profitable repricing rules. Having a precise figure at your fingertips empowers better planning and more confident decisions.
Raw Price = Competitor Price + Offset Constrained Price = max(Min Price, min(Max Price, Raw Price)) Profit = Constrained Price − Cost − (Constrained Price × Fee%) Margin = Profit / Constrained Price × 100
Result: Your Price: $29.49 | Profit: $13.07 | Margin: 44.3%
Competitor: $29.99. Offset: -$0.50 → Raw price: $29.49. That is within the $25–$39.99 range, so constrained price = $29.49. Platform fees: $29.49 × 15% = $4.42. Profit: $29.49 − $12 − $4.42 = $13.07. Margin: 44.3%.
Rule-based repricing follows simple instructions: "Beat the lowest price by $0.01, unless below my floor." Algorithmic repricing uses machine learning to predict the optimal price considering buy box share, sales velocity, profitability, and competitor behavior. Rule-based is simpler and cheaper; algorithmic can extract more value.
Amazon's Buy Box algorithm considers price, fulfillment method (FBA vs. FBM), seller metrics, and inventory levels. FBA sellers with good metrics often win the Buy Box even at slightly higher prices. Price alone doesn't determine the winner, so aggressive undercutting may sacrifice margin without gaining share.
Your minimum price should be: Cost + All Fees + Minimum Profit Target. Your maximum should be: MAP (if applicable) or the highest price that maintains reasonable sales velocity. Review constraints quarterly as costs and fees change.
Dynamic repricing is the automated adjustment of product prices in response to changes in competitor pricing, demand, or other market conditions. On Amazon, repricers monitor competing offers and adjust your price within defined rules to maximize Buy Box share and profitability.
On Amazon, undercutting by $0.01 is standard practice for Buy Box competition among FBA sellers with similar metrics. Larger undercuts don't significantly improve Buy Box share but do reduce your profit. For non-Amazon channels, test different offsets to find the minimum effective discount.
A price floor (minimum price) is the lowest price your repricer is allowed to set. It should be at or above your break-even price (cost + fees + minimum acceptable profit). Without a floor, automated repricing can spiral prices down to near zero in competitive categories.
Yes, if multiple sellers use aggressive undercut strategies, prices can spiral downward. This is why price floors are critical. Some advanced repricers detect price wars and pause repricing or switch strategies to avoid destructive competition.
For products under $30, fixed offsets ($0.01–$0.50) work well. For higher-priced products, percentage offsets (0.5–2%) scale better. Some repricers support both and let you choose based on the product's price range.
Modern Amazon repricers adjust within 5–15 minutes of detecting competitor price changes. Some offer near-real-time repricing. Faster repricing is important in competitive categories with many sellers but less critical for niche products with few competitors.