B&Q Marketplace
Tesco Marketplace
The Range Marketplace
Argos MarketplacePriceSynergy is a Marketplace Intelligence Platform for retailers selling on Mirakl marketplaces such as B&Q, Tesco, The Range and Argos. It connects to your shop through each marketplace's Mirakl API, watches every competitor, price and PayBox on your products, and ranks what to do next by the profit at stake, inside limits you set.
Key takeaways
- It connects with your shop's Mirakl API key and starts scanning the day your shop goes live.
- It shows every rival on every product you sell, who holds the PayBox and the price that wins it back.
- It finds products you can raise, flags prices selling at a loss and checks every change against your min, max and break-even.
- Your team works from one list of ranked actions, with tasks, campaigns and a daily trading email.
What problem does PriceSynergy solve?
On a Mirakl marketplace, every product has one page and any approved seller can add an offer to it. The sale goes to whoever holds the PayBox: the cheapest live offer. Rivals join your products, list a penny below you and take the orders, often without anyone on your team noticing for days.
Most marketplace teams manage this with spreadsheets and spot checks. That works for a few dozen products. Across hundreds or thousands of products and more than one marketplace, the market moves faster than anyone can check it by hand. The problem isn't the team. It's the operating model.
PriceSynergy replaces the spot checks with continuous monitoring, and replaces the spreadsheet with a ranked list of what to do next.
How does PriceSynergy work?
- Connect. Pick your marketplace and paste your shop's Mirakl API key from the seller portal. PriceSynergy checks it straight away and stores it encrypted. You never share your seller portal password.
- Scan. Your catalogue, every rival's offer and your orders start scanning the moment your shop goes live. There's no waiting for an overnight run.
- Act. The dashboard's Biggest wins ranks what to do by the profit at stake. Add your cost prices and min and max prices to unlock margin and safe pricing.
What are PriceSynergy's main features?
| Feature | What it does | The benefit |
|---|---|---|
| PayBox tracking | Marks every offer as cheapest, joint cheapest, undercut or only seller, with the gap in pounds and per cent | Win back the sales you're already competing for |
| Competitor monitoring | Finds every seller with a live offer on your products and gives each a threat score from 0 to 100 | Focus on the rivals that actually cost you money |
| Margin-safe pricing | Sets min and max prices from cost, works out break-even after commission and checks every price against them | Raise where you can and never sell at a loss |
| Team workflow | Bulk actions on up to 1,000 products, monitoring campaigns and tasks with owners | Do in minutes what takes your team a day |
| The Day Book | Every order's sales, commission, cost and margin, emailed to your team each morning | Know how yesterday went before the working day starts |
How does PriceSynergy help you win more sales?
PriceSynergy compares your price with every rival's live offer on every product you sell. Where a rival holds the PayBox, it works out the price that would win it back and flags it if that's below your min price or break-even. It keeps 90 days of price and PayBox history per product, so you can see when a rival arrived and how they behave before you react.
On the competitor side, each rival gets a threat score that weighs how many of your products they undercut, the PayBoxes they hold and your revenue on those products. New sellers show up as soon as they list, including ones you didn't know you had. Brand and category pages show market share, range gaps and margin by marketplace category.
How does PriceSynergy protect your margin?
Cutting price is the easy move. PriceSynergy also shows where you can hold or raise and still win. Where you hold the PayBox by more than you need to, it suggests raising to just below the next seller, capped at your max. Where you're the only seller, it suggests a careful test of a higher price.
- Min and max from cost for every selected product, for example cost plus 10% and cost plus 25%, or imported from Excel.
- Break-even after commission, using each marketplace category's commission rate.
- Loss alerts for products selling below break-even once you add cost prices.
- A fresh check before sending. On Growth and Scale you can send approved prices to Mirakl. Before each one is sent, the live offer is read again and every check runs once more. Sending is off until you switch it on, store by store.
How does PriceSynergy save your team time?
The time in marketplace work goes on finding the products, changing them one by one and checking afterwards. PriceSynergy does the finding and the checking. Filter to the products that need attention, such as thin margins, missing costs or a rival holding the PayBox, then act on up to 1,000 of them at once.
To see whether a change worked, monitor it as a campaign. PriceSynergy compares units, revenue and profit before and since, and gives a plain verdict: working, too early to tell or not working. Findings from your data become tasks with an owner, a due date and the money at stake. Read how each person in a marketplace team uses PriceSynergy.
Which marketplaces does PriceSynergy support?
PriceSynergy connects to B&Q, Tesco, The Range and Argos through each marketplace's own Mirakl API. Debenhams, Superdrug and Decathlon are coming soon. Every plan includes one marketplace, and you can add more as you grow. See how to manage several Mirakl marketplaces from one place.
Who is PriceSynergy for?
It's built for growth-focused retailers running hundreds or thousands of products on Mirakl marketplaces: founders and managing directors who want to grow without adding headcount at the same rate, eCommerce directors who need visibility and control, and marketplace managers who are tired of checking prices by hand.
Every account starts with a free trial, with no card needed, and you'll see your own data the same day you connect. See plans and pricing.
Questions sellers ask
Is PriceSynergy a repricer?
Repricing is one thing it does, not the whole product. PriceSynergy is a Marketplace Intelligence Platform: it shows who you compete with, how they behave and what each sale earns you, then helps you act within your own limits. Read what a Mirakl repricer is.
How does PriceSynergy connect to my marketplace?
Through the marketplace's own Mirakl API, with your shop's API key from the seller portal. The key is checked straight away and stored encrypted, and you never share your seller portal password.
How quickly will I see my data?
The same day. Your catalogue, competitor and order scans start as soon as your shop goes live.
Will PriceSynergy change my prices without asking?
No. It shows the price to set and why. On Growth and Scale you can send approved prices to Mirakl, each one checked against your min, max and break-even first.
Where is my data stored?
PriceSynergy is hosted in the UK on Microsoft Azure. See the security page for how your API key and data are protected.
Sources: Mirakl: B&Q launches marketplace on diy.com; ChannelX: Tesco Marketplace to replatform to Mirakl; Mirakl: The Range advances its online marketplace; Sainsbury's: Argos is building a marketplace (February 2026). Marketplace names are trademarks of their owners. PriceSynergy is independent and isn't endorsed by any marketplace.