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Seller Guides

Practical guides on commission, pricing and profitability for marketplace sellers in Turkey. All of our guides are available in English; the original versions are in Turkish.

E-Commerce

Can You Go from 10 to 1,000 Orders with the Same System?

No. Something different breaks at every order-volume threshold. A map of what needs to change at which threshold.

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September 27, 2026
E-Commerce

Repeat Purchase Rate: The Economics of Keeping Existing Customers

Why is winning a new customer more expensive than keeping an existing one? How to measure and increase the repeat purchase rate.

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September 24, 2026
E-Commerce

Does Expanding Your Product Range Always Bring More Sales?

Adding new SKUs splits stock, attention and capital. When is expansion profitable, and when does it hurt?

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September 21, 2026
E-Commerce

10 Signs That Your E-Commerce Operation Has Grown

Concrete symptoms showing that you have started to strain your current system, and a practical response to each.

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September 18, 2026
E-Commerce

Why Can a Business Lose More Money as Revenue Grows?

The concept of overtrading: why does a business that is profitable on every sale run into a cash squeeze while growing fast?

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September 15, 2026
E-Commerce

Increase Orders or Increase Profit per Order?

The two growth levers carry different risks. Which one should be prioritized in which situation?

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September 12, 2026
E-Commerce

When Should an E-Commerce Business Hire Its First Employee?

Not revenue but how the founder’s time is spent defines the right question. How is the first hiring decision made?

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September 9, 2026
E-Commerce

How Does the Minimum Order Quantity (MOQ) Affect a Small Seller?

MOQ is not just a number; it means tied-up capital and stock risk. Negotiation and alternative strategies.

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September 5, 2026
E-Commerce

What to Watch Out for When Buying from a Supplier for the First Time

Questions to ask beyond price: samples, payment terms, production capacity and quality consistency.

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September 1, 2026
E-Commerce

How Much Money Should Be Tied Up in Stock? The Inventory Trap of Fast Growth

The wholesale purchase advantage can turn into an inventory trap. How do you determine the right stock quantity?

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August 25, 2026
E-Commerce

What Is Working Capital? Why Does It Become Critical as an E-Commerce Business Grows?

The cash conversion cycle and why working capital must grow in proportion in a growing business.

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August 18, 2026
E-Commerce

Profitable but No Cash: Why Does Cash Flow Break Down in E-Commerce?

The mechanism behind seeing profit in the books but no money in the bank account: the gap between accrual and cash.

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August 11, 2026
E-Commerce

The First 100 Orders: What Should a New E-Commerce Business Measure?

Metric tracking that follows order count rather than the calendar: which 5 numbers you should know at 100 orders.

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August 4, 2026
E-Commerce

The Advantages and Hidden Costs of Being Both Manufacturer and Seller

Producing and selling directly at the same time gives a margin advantage, but it also brings the risk of channel conflict.

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July 28, 2026
E-Commerce

E-Commerce Through the Customer’s Eyes: Why Does a Customer Buy from You?

Price is not the only factor. The signals that really drive a buyer’s purchase decision, and the details sellers overlook.

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July 21, 2026
E-Commerce

E-Commerce from the Manufacturer’s Point of View: Is Producing Enough?

Making a good product is no guarantee of sales. The selling skills manufacturers overlook when moving into e-commerce.

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July 14, 2026
E-Commerce

Moving from Selling at Home to a Warehouse Operation: How Do You Know It’s the Right Time?

Warehouse rent is not a cost but an investment. The calculation and decision points that show when it becomes profitable.

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July 7, 2026
E-Commerce

When Is a Small E-Commerce Business Ready to Grow?

Rising revenue does not show that you are ready to grow. Four real criteria to check before you scale up.

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June 30, 2026
E-Commerce

How Much Capital Do You Need for E-Commerce? What to Calculate Before the Capital

Beyond product cost: a realistic start-up capital calculation including stock, ad testing and a cash buffer.

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June 23, 2026
E-Commerce

The First 90 Days in E-Commerce: What to Do and When?

What should you do in which week during the 90 days after your first sale? A staged start-up calendar instead of panic decisions.

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June 16, 2026
VAT & Accounting

VAT-Inclusive and VAT-Exclusive Price Calculation: Formulas and Examples

The correct formulas for converting a VAT-inclusive price to VAT-exclusive, and a VAT-exclusive price to VAT-inclusive.

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May 28, 2026
E-Commerce

What Should Your E-Commerce Profit Margin Be? Margin Bands by Category

A healthy profit margin varies by category. Realistic margin bands for marketplace sellers.

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May 20, 2026
Trendyol

Trendyol Commission Calculation 2026: An Up-to-Date Guide

How is Trendyol commission calculated in 2026, and what do you actually keep per sale? A step-by-step guide with a worked example.

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May 12, 2026
Shipping & Desi

How Is Desi (Volumetric Weight) Calculated? Formula, Examples and Tips

The desi formula, the difference between volumetric and actual weight, and the rules that determine your shipping bill in Turkey.

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May 6, 2026
Hepsiburada

Hepsiburada Commission Rates and Deductions (2026)

Which range do category commissions fall into on Hepsiburada, and what other deductions apply besides commission?

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May 2, 2026
Trendyol

How to Become a Trendyol Seller: From Application to First Sale

What you need for a Trendyol seller application, the store opening process and what to do before your first sale.

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April 28, 2026
Amazon

Amazon Turkey Commission Calculation: Net Profit per Sale

How does the referral fee work on Amazon Turkey, and how do FBA/FBM costs affect your profit?

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April 15, 2026
E-Commerce

How to Start E-Commerce: A 2026 Roadmap

From setting up a company to choosing your first product: the steps to start selling on a marketplace.

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April 2, 2026
Hepsiburada

Becoming a Hepsiburada Seller: Application and First Steps

The Hepsiburada seller application, required documents and what to watch for when opening your store.

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March 30, 2026
VAT & Accounting

Taxation in E-Commerce: What Sellers Need to Know

Which taxes does a marketplace seller pay? The basics of VAT, income/corporate tax and withholding.

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March 18, 2026
Trendyol

Trendyol Shipping and Desi Fees: A Seller’s Guide

How are shipping fees determined on Trendyol, and how does the desi calculation affect your profit?

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March 15, 2026
Amazon

Amazon FBA or FBM? A Cost Comparison

When does handing logistics over to Amazon pay off? A real cost comparison of FBA and FBM.

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March 5, 2026
E-Commerce

Inventory Turnover: Is Your Money Sitting on the Shelf?

How is inventory turnover calculated, and how does slow-moving stock erode your profit?

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February 25, 2026
Trendyol

Trendyol Ads and ACoS: Is Your Ad Budget Eating Your Profit?

How is ACoS calculated for product ads, and at what level do ads make you lose money?

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February 20, 2026
VAT & Accounting

E-Invoice and E-Archive: A Practical Guide for Marketplace Sellers

Which sellers must switch to e-invoicing? How does e-archive differ, and how does the process work?

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February 12, 2026
Hepsiburada

Hepsiburada Shipping Options and Cost Optimization

Cost differences between HepsiJet and contracted carriers, and tactics for optimizing desi.

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February 8, 2026
Shipping & Desi

7 Proven Ways to Lower Shipping Costs

From packaging optimization to rate negotiation: tactics for permanently reducing shipping costs.

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January 28, 2026
Amazon

Amazon Turkey Seller Guide: From Opening an Account to the Buy Box

Account types, listing rules and the basics of winning the Buy Box on Amazon Turkey.

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January 22, 2026
E-Commerce

Multi-Marketplace Management: Same Product, Different Profitability

How do you manage price and profit when selling the same product on Trendyol, Hepsiburada, Amazon and N11?

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January 10, 2026
E-Commerce

Break-Even Price: The Lowest Price You Can Sell At Without a Loss

The break-even price is the sale price at which profit drops to zero after commission and VAT are deducted. The correct formula, how to separate the VAT share, examples and the Excel equivalent.

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January 5, 2026
E-Commerce

Hidden E-Commerce Costs: 7 Items Quietly Eroding Your Profit

How are the expenses you leave out of your calculations eroding your margin?

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December 22, 2025
E-Commerce

Marketplace Commission Comparison: Where Should You Sell?

Trendyol, Hepsiburada, Amazon TR, N11 — on which platform is the same product more profitable?

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December 14, 2025
E-Commerce

Calculating the Cost of Returns: The Invisible Profit Loss

How much does each return cost you? Calculate your monthly return loss.

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December 1, 2025
E-Commerce

Campaign Profitability Analysis: When Does a Discount Make Sense?

Discounts increase sales, but do they increase profit? Calculating the break-even discount rate.

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November 18, 2025
VAT & Accounting

VAT-Inclusive Profit Calculation: A Guide for Sellers

How do you separate your real profit from a VAT-inclusive price?

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November 2, 2025
E-Commerce

What Is Profit Margin? What Is a Healthy Margin?

The difference between markup and margin, and healthy margin bands in e-commerce.

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October 25, 2025
Hepsiburada

Hepsiburada Commission Rates and Deductions

Which deductions apply on Hepsiburada besides commission, and how do they affect your profit?

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October 12, 2025
Trendyol

Trendyol Commission Calculation Guide

How do Trendyol commission rates vary by category, and how much do you actually keep per sale?

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October 5, 2025
Shipping & Desi

Desi Calculation: Lower Your Shipping Costs

What is desi (volumetric weight), how is it calculated and how can packaging optimize it?

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September 28, 2025
E-Commerce

How to Set Your Selling Price

A selling-price formula that starts from your cost and protects your target margin.

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September 20, 2025