Updated:
March 21, 2025
In this article, we will explain in more detail how we calculate the monthly costs of plugins for B2B e-commerce (TCO) and their impact on site performance (increased loading times). The information complements the previously presented slider, which illustrates the impact of the number of plugins, integration partners, and market areas on total costs.
Note! The estimate is based on a case example where the B2B e-commerce operates internationally. Actual costs depend on factors such as business volume, the scope of integrations, and service level.
1. Method for calculating costs and performance impacts
The table below presents typical plugins used by enterprise-level B2B e-commerce. The costs consist of monthly license fees or transaction-based charges. Additionally, each plugin brings its own loading script (JavaScript, CSS) to the site, which increases the page loading time.
The table below shows typical add-ons and performance enhancements on other platforms (for example, Shopify, Magento, WooCommerce – where key functionalities are implemented through separate extensions)
Add-on / plugin
Cookie banner / GDPR (Cookiebot, OneTrust)
~80–150 €
+200–400 ms
Review application (Trustpilot, Yotpo)
~300–800 €
+100–300 ms
Search tool
Klevu, Algolia)
300–800 €
+100–300 ms
International sales (Weglot etc.)
~180–300 €
+150–400 ms
B2B Wholesale pricing (e.g. Bold)
~80–200 €
+100–200 ms
EU VAT / ALV validation (Exemptify, Vatify)
~20–80 €
+50–100 ms
Billing & payment terms (Pay by Invoice, Net Terms)
~50–120 €
+50–100 ms
Customer group management (Locksmith)
~30–80 €
+50–100 ms
Advanced Shipping (Advanced Shipping tms.)
~80–200 €
+50–100 ms
Chat / customer service (Intercom, Zendesk)
~100–300 €
+100–300 ms
Email Marketing (Klaviyo, Mailchimp Pro)
~120–400 €
+50–200 ms
Complex product configurations, Rule-based E (CPQ)
~300–1000 €
+100–300 ms
Buying from the list view, B2B Bulk Order
~50–150 €
+50–100 ms
Quote request functions, Cart2Quote
~100–300 €
+100–300 ms
Total: 14 pieces
~1790–4880€
1.35–3.5 seconds
Note! The estimates are indicative. Some services charge a fixed monthly fee, while others are based on traffic volumes or transaction volumes. The loading time is particularly affected if each plugin loads its own script separately.
2. Underlying Assumptions and Sources
Cost estimates and performance figures are based on the following information:
Published Price Lists: The prices of several plugins (e.g. Weglot, Klaviyo, Cookiebot) increase according to domain and traffic volume.
Typical Enterprise B2B Cases: Multilingual support, extensive product catalogs, customer-specific pricing, and payment terms require several plugins.
Cumulative Loading Time: Each additional plugin increases rendering latency, which can total over three seconds.
Practical Project Experiences: Maintenance costs for ERP, PIM, payment service, and logistics integrations can rise to €300–2000/month.
3. Why are the figures indicative?
Business volume: Orders, user counts, and product quantities impact the pricing of add-ons.
Number of domains: Multiple country domains multiply licensing costs and performance impacts.
Customization needs: B2B add-ons often require configuration and development, which raises project-specific costs.
Platform-specific differences: Shopify, Magento, and WooCommerce differ in add-on pricing and included features.
4. How does AI Commerce solve these challenges?
AI Commerce is designed from the ground up to address the most common bottlenecks of monolithic e-commerce solutions. All key functionalities – such as international trading, compliance with EU regulations, and advanced B2B features – are built in without the need for plugins. This ensures a fast user experience and significantly lower technical complexity.
Loading times remain under 100 ms, even with a product quantity of 100,000 and 50 market areas.
Complete freedom to choose the best tools, from all available solutions without the risk of vendor lock-in.
Custom integrations without reliance on multiple external partners – all manageable from a single platform.
This enables building a scalable and high-performance e-commerce without compromising usability or manageability. Want to know more, get in touch!
Read next:
How do traditional e-commerce platforms hinder the growth of B2B e-commerce?
Single market
Multiple markets
Global scalability
Traditional monolithic e-commerce platforms operating in a single market (such as Shopify, Magento, or WooCommerce) require multiple add-ons for payment processing, invoicing, logistics, B2B pricing, regulatory compliance, and user management. This increases the complexity of the system, slows down the site, and increases reliance on external technical partners when customized integrations are needed, for example, with ERP, CRM, or PIM systems.
Number of add-ons
8 –
10 pcs
10 pcs
Addition of the download time
~ 1.0 –
1.5 s
1.5 s
Integration partners
~ 3 -
6 pcs
6 pcs
Costs
Cost of add-ons
~ 1500 –
2000 € /month
2000 € /month
Cost of integration partners
~ 300 –
800 € /month
800 € /month
