The verdict in three sentences
SAP Business One and Sage X3 are safe bets for a manufacturer with standard processes, but every user adds a recurring licence and every business specificity becomes a development layer billed at a premium. A custom ERP (130-300k EUR one-off + 15% TMA) removes licences, only codes your real processes (food, mechanical, chemical) and makes you own the code, with break-even at 3-5 years from 25 users. The choice rests on three axes: process specificity, avoided licence cost and shop-floor machine/IoT integration.
The 5-year match, 2026 figures
Let us compare three scenarios for a French manufacturer of 30 users, over a 5-year horizon.
| Criterion | SAP Business One | Sage X3 | Custom ERP |
|---|---|---|---|
| Licence | 90-140 EUR/user/month | 100-160 EUR/user/month | 0 (code owned) |
| Initial integration | 60,000-150,000 EUR | 120,000-300,000 EUR | included |
| Initial build | in licence | in licence | 130,000-300,000 EUR |
| Annual maintenance | 18-22% of licence | 18-22% | 15% of build |
| Total 5-year cost (30 users) | 280,000-450,000 EUR | 400,000-650,000 EUR | 220,000-410,000 EUR |
| Unused modules paid | yes | yes | no |
| Code ownership | no | no | yes |
Over 5 years and 30 users, custom is generally the cheapest, especially against Sage X3. But SAP Business One stays relevant if your processes fit the standard and you want a large integrator ecosystem.
The decision points that tip the balance
Price is not enough. Here are the qualitative criteria and their real project impact.
| Decision point | Vendor edge (SAP/Sage) | Custom edge |
|---|---|---|
| Specific processes (food, chemical) | paid vertical modules | code 100% fit to the trade |
| Zero unused module | no, imposed packs | yes, a-la-carte scope |
| IoT / shop-floor integration | limited, costly connectors | native APIs, light MES included |
| Ownership & reversibility | vendor lock-in | code + PostgreSQL owned |
| Integrator ecosystem | very large | vendor dependency |
| Fast evolvability | vendor roadmap | on-demand changes |
If you tick three or more boxes in the right column, custom becomes the rational option. Machine/IoT integration is often the breaking point: SAP/Sage connectors to a heterogeneous machine fleet are costly and rigid.
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Mini case study
Sophie, CFO of a food manufacturer with 32 users near Lyon, compared Sage X3 (180,000 EUR integration + 130 EUR/user/month) to a custom ERP. Sage X3 over 5 years: 180,000 + (32 x 130 x 12 x 5) = 429,600 EUR, plus 20% TMA. Kolonell custom: 240,000 EUR build + 36,000 EUR/year TMA = 420,000 EUR over 5 years, no licence, with lot traceability required by food regulation coded to spec and an MES connected to her 4 lines. Cash flow at year 1 disfavours custom, but break-even hits by year 4 and she books a software asset.
FAQ
Is SAP Business One still a good choice in 2026? Yes, for a manufacturer with standard processes under 25 users wanting an established vendor and a large integrator network. Beyond that, licence weight tips toward custom.
Is custom risky on maintenance? The main risk is vendor dependency. It is managed with a clear TMA contract (15%/year), documented code and a standard PostgreSQL database any developer can pick up.
How long to migrate from a spreadsheet or legacy tool? Expect 6 to 10 months for a full custom build, data migration included. SAP/Sage can be faster if the standard fits.
Can we integrate production machines? Yes, and it is often custom's strength: native APIs and light MES included, where SAP/Sage bill rigid connectors.
What is the real avoided licence cost? For 30 users at 120 EUR/month, that is 43,200 EUR/year, i.e. 216,000 EUR over 5 years. That amount funds the custom build.
Let's scope your project. Give us your user count, sector and machine constraints, and we compare vendor vs custom with figures in hand. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
