Forged in the marketplace battlefield
SellerKing is the automation tool built by real sellers: it syncs your catalog, calculates your exact net profit and processes your orders without you lifting a finger. Born for Amazon, and ready to connect to other marketplaces on request.
The seller's pain points
The problem
Your supplier runs out of stock on a product, but your Amazon listing still shows it as available. An order comes in that you can't fulfil.
How SellerKing solves it
Real-time sync via API with your wholesalers: the moment the supplier runs out of stock, the listing updates instantly.
Impact
The problem
You calculate margin by hand and forget to deduct Amazon's commission, weight-based shipping, or VAT. You sell believing you're profiting when you're actually losing money.
How SellerKing solves it
The pricing engine automatically calculates the real net margin, deducting every cost before each product is published.
Impact
The problem
You copy and paste every Amazon order by hand into your supplier's website. A transcription error delays or loses the shipment.
How SellerKing solves it
Automatic routing: the order travels directly from Amazon to the supplier's API, without you lifting a finger.
Impact
Your entire Amazon ecosystem, in one panel
Pricing
Fewer spreadsheets, fewer open tabs, fewer surprises at month end: choose how much control you need today and scale when you need to.
14 days free
King Basic
To start centralizing your operation
€79/month
Ideal for sellers handling their first orders who want to stop relying on spreadsheets and juggling five tabs at once.
No card required. No commitment afterwards.
Recommended
King Pro
For businesses that can no longer operate by hand
€199/month
Ideal for businesses with real volume that need automation, alerts before a problem happens, and a team that responds fast.
The plan most growth-stage businesses choose.
King Elite
For custom operations
Custom
Ideal for companies with specific needs, multiple business units, or integrations no standard plan covers.
A specialist reviews your case before proposing anything.
| Feature | King Basic | King Pro | King Elite |
|---|---|---|---|
| Platform access | Yes | Yes | Yes |
| Central control panel | Yes | Yes | Yes |
| Order management | Basic | Advanced | Custom |
| Sales management | Yes | Yes | Yes |
| Centralized inventory | Yes | Yes | Yes |
| Data sync | Basic | Advanced | Full |
| Operational alerts | No | Yes | Yes |
| Process automation | No | Yes | Yes |
| Reporting | Basic | Advanced | Advanced + custom |
| Margin control | Yes | Yes | Yes |
| Users included | 1 | Up to 3 | Unlimited / custom |
| Support | Standard email | Priority | Dedicated |
| Onboarding | Self-guided | Guided | Custom |
| Standard integrations | 1 | Several | All you need |
| Custom integrations | No | No | Yes |
| Custom workflows | No | Partial | Yes |
| Multi-company / multi-unit | No | Partial | Yes |
| Data exports | Basic | Advanced | Advanced + automated |
| API access | No | Limited | Yes |
| SLA / premium support | No | No | Yes |
| White-label / customization | No | No | Yes |
All plans include product updates at no extra cost. You can change plans at any time: what changes is how much you automate, not the control you have over your business.
Tell us how many orders you handle per month and how many channels you sell on. In 15 minutes we'll tell you which plan makes sense for you, no strings attached.
Let's talk about your caseNeed a specific setup? Let's talk.
For those who haven't started yet
Want to sell on Amazon but don't know where to start? Mentoría King is personal, hands-on mentoring — not a recorded course you watch once and forget. We guide you from your first product to your first profitable sale.
Support from day one
A real person reviews your specific case and guides you step by step — not a generic template for everyone.
Analysis of what to sell
We help you identify which products have real demand and enough margin before you invest a single euro in stock.
Competitive pricing from the start
We give you a real market pricing analysis so you go to market knowing your offer is competitive, not guessing blind.
Practical seller training
Real Amazon selling techniques: how to optimize your listing, manage reviews and avoid a beginner's most costly mistakes.
Tell us about your situation and we'll tell you if Mentoría King is right for you.
More than a tool
Just as easy to use on day one as on day one thousand. Whether you've just opened your first store or manage thousands of listings, everything is where you'd expect, with no endless learning curve.
Every seller runs a different business. We treat your case individually, understanding your specific goals — not with generic manual answers.
We're with you day to day so you have more control over your stores, and your business grows knowing someone's looking after the details with you.
How SellerKing was born
"Made by sellers, to solve the real problems of other sellers."
We didn't build SellerKing in a software development office; we built it in the trenches of online selling. It was born after suffering a temporary Amazon account suspension because of a supplier's outdated stock, and losing money to a spreadsheet with outdated margin formulas.
Tired of generic solutions that don't understand a seller's day-to-day, we decided to build our own tool. After years of trial and error alongside real high-volume sellers, we managed to stabilize accounts, automate operations, and safely multiply revenue. Today, that same technology is within your reach.
What people already using it say
"I stopped checking my phone in fear every morning. I used to live worrying Amazon had suspended my account over a stock shortage. Now it simply doesn't happen."
"I found out I'd been selling at a loss on a third of my catalog for months without knowing it. The margin calculator taught me that in the first week."
"I started with no idea what FBA or FBM even meant. Support sat down with me to understand my case, not hand me a generic manual."
Frequently asked questions
Yes. SellerKing works just as well whether you use Fulfillment by Amazon (FBA) or manage shipping yourself or through your supplier (FBM), syncing stock and automating orders in both cases.
SellerKing automatically deducts Amazon's commission, weight-based shipping cost and VAT from the sale price before the product is published, showing the real net margin and preventing listings that would generate losses.
Yes. SellerKing syncs your suppliers' stock with your Amazon listings in real time through direct API integration, preventing out-of-stock sales and the account penalties this causes.
Yes. SellerKing's interface is designed to be just as simple for a seller who is starting out as for one managing thousands of listings, with personalized support tailored to each case.
Last step
Fill in the form and within 24 hours someone from our team will reach out to understand your specific case, not read you a sales script.
Received!
We'll contact you within 24 hours.