A marketplace fee comparison should measure more than the advertised commission or a free listing. This guide shows how to calculate the full cost of selling, winning leads, or promoting a business across up to 25 platforms, using repeatable inputs for subscriptions, transaction fees, lead charges, payment processing, advertising, staff time, and refunds.
Overview
Choosing between business listing sites and online marketplaces is rarely a simple question of which platform is cheapest. A free profile may produce few relevant enquiries, while a paid directory may justify its fee if it consistently reaches the right buyers. A marketplace with a visible transaction commission may still cost less than a lead platform that charges for unqualified contacts.
The useful comparison is your effective cost per qualified opportunity and, where possible, your effective cost per customer. These measures put listing fees, lead costs, sales effort, and revenue in the same calculation.
Use this framework when comparing B2B directories, freelancer and agency directories, local business directories, real estate listing platforms, product marketplaces, and other service marketplace platforms. For a wider shortlist, see the guide to business directories by industry and the practical marketplace fit checklist.
Do not treat the figures in this article as current prices for any named platform. Marketplace pricing changes, can vary by country or category, and may depend on billing terms, sales volume, payment method, or optional promotion. Record the current terms directly from each platform before committing budget.
How to estimate the true cost
Build one row for every platform under consideration. If you are reviewing 25 platforms, use the same columns for all 25 so the comparison remains consistent. Separate fixed costs from variable costs and distinguish a lead from a completed sale.
The basic formulas
Total monthly platform cost = subscription or listing fee + lead charges + transaction commission + payment processing + promotion spend + internal administration cost + refunds or disputes.
Cost per qualified lead = total monthly platform cost ÷ qualified leads generated.
Cost per customer = total monthly platform cost ÷ customers acquired.
Marketplace customer acquisition cost = total monthly platform cost ÷ new paying customers.
For transaction-based selling, calculate the fee against the actual order value rather than the catalogue price. A commission may apply to shipping, taxes, add-ons, or only part of the transaction, depending on the platform’s rules. If the treatment is unclear, record two scenarios rather than choosing an optimistic assumption.
A simple comparison scorecard
For each platform, record:
- Monthly or annual subscription cost.
- One-time listing, setup, verification, or application charges.
- Commission percentage and any per-transaction charge.
- Cost per lead, enquiry, application, booking, or response.
- Payment processing and currency-conversion costs.
- Optional featured placement, advertising, or promotional spend.
- Expected leads, qualified leads, sales, and average order value.
- Time required to create listings, answer enquiries, and maintain availability.
- Refund, cancellation, dispute, or reversal exposure.
- Tracking method and the date on which each price was checked.
This structure works for both free business listing sites and paid business directories. A zero in the listing-fee column does not mean the channel has no cost; it may simply move the cost into lead handling, promotion, or staff time.
Inputs and assumptions
A reliable marketplace comparison depends on realistic inputs. Start with your business model, not the platform’s headline pricing.
Define the value of a conversion
Use the average first-sale revenue, gross profit, or contribution margin that a new customer is expected to generate. Revenue is easier to calculate but can make a channel look healthier than it is when fulfilment costs are high. If customers commonly buy again, keep first-purchase economics separate from repeat-purchase value.
Use a conservative funnel
Estimate the number of enquiries, then the percentage that are relevant, then the percentage that become customers. For example:
Enquiries × qualification rate × close rate = expected customers.
A platform promising high visibility is not necessarily a good source of qualified leads. Track enquiry quality using a consistent definition, such as a prospect that matches your location, budget, service scope, and timing. This makes directory traffic comparison more useful than raw views or profile visits.
Include the cost of time
Estimate the minutes spent responding to a typical enquiry, preparing a quote, updating a listing, and managing post-sale administration. Multiply total hours by a reasonable internal hourly cost. This is particularly important for marketplaces that generate many low-intent enquiries or require manual applications.
Separate known figures from assumptions
Mark every input as one of three types: confirmed, estimated, or unknown. Confirmed inputs come from the platform’s current pricing or account terms. Estimated inputs come from your own comparable channels or a small test. Unknown inputs should be modelled as a range. A low, expected, and high scenario is more honest than a single precise forecast.
Keep a dated record of the terms you reviewed. The marketplace fees comparison guide can serve as a companion reference for separating listing, transaction, and lead costs.
Worked examples
Example 1: A subscription directory
Assume a directory has a monthly subscription of 120 currency units and no charge per enquiry. Your team spends 80 units of time managing the profile and responses during the month. The total monthly cost is therefore 200 units.
If the directory produces 10 qualified leads and two customers, the cost per qualified lead is 20 units and the cost per customer is 100 units. If the average contribution from a new customer is 350 units, the channel may be commercially viable, subject to fulfilment capacity and the quality of those customers.
These figures are illustrative assumptions, not a claim about any specific directory.
Example 2: A pay-per-lead platform
Assume a platform charges 18 units for each enquiry. During a month, you receive 16 enquiries, but only eight meet your target criteria. Add 50 units for administration and 40 units for optional promotion. The total cost is 378 units: 288 units in lead charges, 50 units in administration, and 40 units in promotion.
The effective cost per qualified lead is 47.25 units. If two customers result, the cost per customer is 189 units. This is the figure to compare with the subscription directory, not the 18-unit headline lead charge.
Example 3: A transaction marketplace
Assume a platform has no subscription cost but retains 12% of a 900-unit order and charges 3% for payment processing. The variable cost is 135 units before any refund, advertising, fulfilment, or customer-service expense. Add 45 units for promotion and 30 units of internal administration, and the total channel cost is 210 units.
If the order produces 300 units of contribution before marketplace costs, 90 units remain after the channel costs. Recalculate this example whenever average order value, conversion rate, commission rules, or promotional spend changes.
How to compare the examples
Put every platform into the same summary view: total cost, qualified leads, new customers, cost per qualified lead, cost per customer, and contribution after marketplace costs. Rank the options by business outcome rather than by commission alone. A higher-cost platform can be preferable if it delivers better-fit buyers with less sales effort.
When to recalculate
Review your marketplace fees comparison before renewing an annual plan, increasing promotional spend, or adding another listing channel. Recalculate immediately when a platform changes its subscription, commission, lead, payment, cancellation, or advertising terms.
Also update the model when your own inputs move. Important triggers include a change in average order value, close rate, service capacity, response time, target geography, sales team cost, refund rate, or the definition of a qualified lead. A platform that was profitable for one service or location may not perform the same way for another.
Use a short test period when the inputs are mostly estimates. Set a spending limit, define the minimum number of qualified leads required, and decide in advance what would justify renewal. Track every enquiry with a source field or campaign tag. The guide to tracking leads from directories and marketplaces explains how to make that attribution more consistent.
Finally, keep a dated fee log for all 25 platforms, even those you reject. Revisit it quarterly or whenever pricing pages, account terms, or sales results change. For the operational side of publishing profiles, use the business directory submission checklist and tracker. The goal is not to find the platform with the lowest advertised fee. It is to identify the channels that produce qualified demand at a cost your business can support.
