Dynamic pricing is not exclusive to Amazon (which repriced ~2.5 million SKUs per day in 2022, according to The Wall Street Journal). Brazilian SMBs can apply the same logic to 20-50 strategic SKUs with simple rules and measurable margin gains.
2-7%
is the typical gross margin gain in catalogs with structured dynamic-pricing rules over 12 months.
McKinsey, Pricing Excellence in Retail (2022)
A 1% improvement in pricing is, on average, 4× more impactful on operating profit than a 1% reduction in variable costs.
What dynamic pricing is (and what it isn’t)
It is dynamic pricing
• Adjustment by a documented rule
• Explicit floor and ceiling
• Defined cadence (D, W, M)
• Measurable variables
• Traceable decision (log)
It is NOT dynamic pricing
• “I changed it because I felt like it”
• No floor (burns margin)
• Improvised cadence
• No objective variable
• Decision with no trace
The 3 essential rules to get started
1. Floor (minimum price)
The minimum price covers the unit cost + a floor margin (e.g., 18% gross). Without a floor, dynamic pricing becomes a margin destroyer. Example:
- SKU cost: R$ 64
- Floor margin: 18% → minimum price R$ 78.05
- Never drops below R$ 78.05, even if a competitor does
2. Ceiling (maximum price)
The maximum price is what the market tolerates without a drop in conversion. Without a ceiling, you end up expensive and lose sales without noticing. Calibrate it by:
- Average price of the 3 direct competitors +10%
- Acceptance-survey price (Van Westendorp, if you have it)
- Conversion history by price band
3. Window (revaluation cadence)
Define how often pricing is reassessed. Without a defined window, a rule doesn’t become a process.
Daily
electronics, travel, volatile category
Weekly
fashion, beauty, home — the most common BR standard
Biweekly
long tail, low turnover
Seasonal
commercial dates, launch, clearance
How monitoring factors into the equation
Without structured competitor data, dynamic pricing becomes guesswork. With an organized timeline (price, coupon, promotion of your priority competitors), each review cycle takes 15-20 minutes and has a foundation.
When NOT to use dynamic pricing
Practical 6-week roadmap
- Week 1: select 20-30 critical SKUs (top 70% of revenue). Document the unit cost and floor margin.
- Week 2: gather the prices of the 3 direct competitors for those SKUs.
- Week 3: set the floor and ceiling for each SKU. Build a control spreadsheet.
- Week 4: choose a cadence (weekly, in most cases). Define the revaluation day.
- Week 5-6: run the first cycle. Compare the result vs the baseline.
Referências e leitura complementar
- Marn, M. V. & Rosiello, R. L. (1992). Managing Price, Gaining Profit. Harvard Business Review, Sep-Oct 1992 link .
- McKinsey & Company (2022). Pricing Excellence in Retail. McKinsey Retail Practice link .
- Mantrala, M. & Rao, V. (2017). A Decision-Support System for Retail Pricing. Journal of Marketing Research, 54(4).
- The Wall Street Journal (2022). How Amazon Reprices Millions of SKUs Daily. WSJ Technology.
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