Ecommerce & Digital
What International Ecommerce Actually Costs: The Numbers Nobody Puts in the Business Case
1 October 2025
International ecommerce business cases tend to be optimistic on revenue and vague on cost. The revenue model gets built with care: market size, penetration assumptions, conversion rates, channel split. The cost model gets a contingency line and a hope.
I have built international ecommerce operations from scratch, traded across 25+ countries, and put together business cases for market entry across Europe. The numbers that surprise people are rarely the obvious ones.
Here are the costs that do not make it into the first draft.
Eco-certification and market compliance
If you are entering a market with specific certification requirements, and most serious European markets have them, the cost is not just the application fee. It is the application fee, the testing costs, the annual licence, the pack redesign to display the certification, and the production run in the new format. Multiply that by the number of SKUs and the number of markets.
More importantly, there is a timeline cost. Certification processes take months. If your launch is contingent on certification, your Q3 launch becomes a Q1 launch of the following year. Build the timeline before you build the revenue model.
Amazon is not free distribution
Amazon marketplace fees are well understood. What is less discussed is the full cost of competing effectively on the platform.
A listing goes live for minimal cost. A listing that ranks, that appears when a customer searches for your category, that generates reviews, that converts at a rate that makes the economics work, requires investment. Sponsored Products advertising from day one. Amazon Vine enrolment for early verified reviews. Product photography and listing copy that meets the standard of the category leaders. A brand storefront.
None of this is optional if you want results within a reasonable timeframe. Budget it properly or do not launch on Amazon.
The bulk SKU problem
Consumer buying behaviour on Amazon varies significantly by market. What sells in Ireland or the UK in a standard retail pack does not necessarily sell in Germany or Sweden, where bulk purchasing is the dominant online behaviour in many categories.
This means a new SKU, which means new packaging, which means a new production run, which means minimum order quantities and warehouse implications. It is a significant hidden cost in any cross-border Amazon strategy.
Distributor agreements are not free
Finding a distributor is a relationship. Formalising it is a legal exercise. A properly negotiated distributor agreement, covering territory exclusivity, pricing protections, minimum purchase commitments, IP provisions, and termination rights, requires legal review in each market. Costs vary, but budget for it. A poorly drafted distributor agreement is more expensive than a well-drafted one.
Logistics complexity compounds
Cross-border ecommerce logistics look manageable in a spreadsheet. They are manageable in practice, but the complexity compounds with market count. VAT compliance costs, customs documentation, returns management, Pan-EU FBA inventory pooling, local warehousing decisions: each adds operational overhead that somebody has to manage.
Amazon’s Pan-EU FBA programme simplifies the logistics significantly for marketplace sales. It does not simplify retail distribution. Those are separate supply chains, separate lead times, and separate compliance requirements.
The working capital implications of seasonal businesses
Many product categories are seasonal: garden, BBQ, heating, outdoor. Proper currency management and inventory planning are essential, because seasonal products in new markets require inventory investment before revenue exists. You are building stock for Q4 before you have a single Q3 customer relationship confirmed. The working capital peak hits before the cash comes in.
Model this carefully. It is the difference between a launch that runs out of runway and one that makes it to the reorder.
What good business casing looks like
The best international ecommerce business cases treat cost as seriously as revenue. They itemise certifications, legal costs, platform investment, international pricing, and SKU development alongside the revenue projections. They model working capital quarterly, not annually. They name the risks and quantify the mitigation cost.
They also separate the conservative case from the base case and stress-test both. The question is not whether the numbers work in the base case. It is whether the business survives the conservative case.
Maebh Collins is a Chartered Accountant (FCA, ICAEW) with twenty years of operational experience as a founder and senior finance leader, including international ecommerce across 25+ countries.
Maebh Collins is a Chartered Accountant (FCA, ICAEW), Big 4 trained, with twenty years of experience building and running international businesses. She specialises in finance transformation, ecommerce operations, and digital strategy.