How to use automatic repricing (step-by-step guide)

Automatic repricing is software that adjusts your product prices on marketplaces on its own, continuously, based on rules you set and on competitors' prices. The goal: stay competitive and win the Buy Box without watching prices by hand, while protecting your margin with a price floor. Here is how to set it up properly, without hurting yourself.

What automatic repricing actually is

Instead of checking your competitors every morning, you define your price boundaries and your strategy once, and the tool repositions your prices when the market moves: a competitor drops their price, runs out of stock, or sees their ratings fall, and your price is readjusted within minutes.

Two things sellers often get wrong:

• A good repricer moves prices up as well as down: when you are the only one in stock, it raises the price toward your ceiling instead of leaving money on the table.
• It works on the total price the buyer sees (product + shipping), not just the listed price, because that total is what decides the Buy Box on Amazon as well as on marketplaces like Cdiscount or ManoMano.

Before you start: the three numbers you need

Without these three figures, no repricer can protect you:

1. Your cost of goods per reference.
2. Your marketplace fees (commission, subscription, processing fees) and your fulfillment costs (shipping, storage, returns provision).
3. The minimum price below which you never want to go.

Manual repricing becomes unmanageable past 30 to 50 references: that is the threshold where automation starts to pay off.

Step 1: Set your floor price and your ceiling price

Repricing only plays between two boundaries. The floor guarantees you never sell at a loss; the ceiling stops you from pricing yourself out of the market when you are alone.

1. Calculate the floor: cost of goods + marketplace commission + fulfillment costs + minimum acceptable margin. This is your absolute guardrail. Forgetting commissions or shipping in this calculation is the number-one cause of a "clean" loss-making sale.
2. Set a realistic ceiling: often 15 to 30% above your target price, the point above which you stop converting.
3. Enter your boundaries in bulk rather than one by one, via a file import, if your catalogue is large.

Key takeaway: margin is not the only reason to set a hard floor. A poorly calculated floor exposes you to selling below cost, which can be a compliance issue in some markets.

Step 2: Choose your repricing strategy

Two broad families, chosen according to your catalogue and your appetite for risk:

• Rule-based repricing runs explicit logic ("match the lowest price minus one cent", "stay 2% below the Buy Box"). Simple, transparent, predictable, and often cheaper. Ideal to start with or for a stable catalogue. Downside: two sellers mechanically undercutting each other can trigger a race to the bottom.
• Algorithmic (AI) repricing learns competitors' behaviour and looks not for the lowest price, but for the highest price that still wins the Buy Box. More relevant on highly competitive, high-volume listings, and often overkill on a product you are the only one to sell.

On a listing you sell alone, a simple rule is enough; AI earns its keep when a dozen competitors fight over the same listing.

Step 3: Connect your marketplaces

Link each channel so the tool can read your offers and reposition your prices. Best practices:

1. Start with a single marketplace and a small batch of products.
2. Confirm the tool correctly reads your current prices, your competitors, and your Buy Box position.
3. Make sure the output goes through a clean price feed that enriches your system without writing directly into your source catalogue.

Step 4: Launch, monitor, then scale

Do not switch your whole catalogue over at once:

1. Start on a small batch and watch for 48 hours.
2. Monitor three signals: your Buy Box rate, your real margin, and your price-change frequency.
3. Scale gradually once the behaviour suits you.

Tip: set an alert when a competitor drops below your floor. It usually means they are selling at a loss or made a pricing error, not that you should follow them.

Mistakes to avoid

• Repricing without a floor: a guaranteed race to the bottom. The textbook case is still that biology book that reached over 23 million dollars on Amazon in 2011, with no ceiling, because two algorithms kept escalating each other.
• Blindly following the cheapest: a competitor's price is a signal, not an order. An imprecise product match (a 2-pack taken for a 3-pack, refurbished for new) distorts the whole decision.
• Ignoring per-marketplace margin: commissions differ from one channel to the next, so your floor should too.

How often do prices change?

Depending on strategy and competition, from a few times a day to several times an hour on hotly contested listings. Tools typically react within 2 to 15 minutes of a detected change; the technical ceiling comes from the marketplaces themselves, not the tool.