The verdict in three sentences
An off-the-shelf WMS (EUR 30 to 80/user/month) quickly equips a standard warehouse with picking, locations and inventory. A custom WMS (EUR 50,000 to 120,000) is warranted when your logistics flows, picking strategy or traceability constraints do not fit a generic model. The tipping point is around 5,000 active SKUs or 3 storage zones with different rules.
The building blocks of a WMS that makes money
A WMS (Warehouse Management System) orchestrates receiving, put-away, picking, location replenishment, inventory and shipping. The mobile scanning app is the core of the gain: it removes paper entry and makes every movement reliable.
| Feature | Role | Typical 2026 gain (estimate) |
|---|---|---|
| Mobile barcode scanning | Reliable movements | -25% picking errors |
| Location addressing | Optimizes travel | -18% picking time |
| Cycle counting | Continuous stock accuracy | +99% stock accuracy |
| Wave picking | Groups picks | +20% lines/hour |
| Auto replenishment | Avoids pick-face stockouts | -30% stockouts |
| Lot/serial traceability | Recalls and expiry | Compliance |
Custom vs off-the-shelf: the numbers
Off-the-shelf is paid by subscription and suits classic flows; custom absorbs the upfront cost but matches your picking and traceability rules with no per-user fee.
| Criterion | Off-the-shelf WMS | Custom WMS |
|---|---|---|
| Entry cost | EUR 30-80/user/month | EUR 50,000-120,000 |
| Deployment time | 6-12 weeks | 5-10 months |
| Mobile scan app | Standard | On your screens/flows |
| Picking rules | Predefined | Custom |
| 5-year cost at 15 pickers | EUR 40,000-95,000 (licenses) | EUR 65,000-135,000 (with maintenance) |
| ERP integration | Standard connectors | Native, on your fields |
| Vendor lock-in | High | Low (code delivered) |
Mini case study
Sophie is logistics director at a spare-parts distributor near Lille: 6,200 SKUs, 15 pickers, 2,500 order lines/day. Her picking error rate is 2.4%, each error costing about EUR 22 (return, re-pick, credit note). That is 2,500 x 2.4% x 22 x 220 days = EUR 29,040/year of poor quality. A custom WMS at EUR 88,000 + scanning app, cutting errors by 25%, saves EUR 7,260/year, plus 18% picking time gained on a picking payroll of EUR 420,000/year, i.e. about EUR 75,000/year. The project pays back in just over a year.
FAQ
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Does a small warehouse need a custom WMS?
Rarely below 2,000 SKUs and a simple flow: an off-the-shelf product at EUR 30-50/user/month is enough. Custom becomes relevant with multiple flows and specific picking rules.
Does the scanning app run on standard hardware?
Yes, on rugged Android handhelds or smartphones with a Bluetooth scanner. Budget EUR 250 to 900 per terminal depending on required ruggedness.
How much does cycle counting cost in the project?
The cycle-counting module accounts for EUR 6,000 to 15,000 of the budget. It replaces the blocking annual inventory with continuous targeted counts.
Can the WMS connect to our ERP and TMS?
Yes. Order/stock exchanges with the ERP and shipping orders to the TMS are standard; budget EUR 6,000 to 18,000 depending on connectors.
How long until go-live?
Between 5 and 10 months. A first pilot zone (receiving + picking) is often live in 3-4 months before rollout.
Let's scope your project. Tell us your SKU count, storage zones and picking volumes, and we'll price a custom WMS (indicative budget EUR 50,000-120,000) or point you to a suitable off-the-shelf product. 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.
