The verdict in three sentences
Integrating a web platform with an existing ERP eliminates double entry and stock discrepancies, but cost hinges above all on your ERP's API maturity. In 2026 in Miami, an integration project costs USD 40,000-120,000 over 10-18 weeks, depending on whether the ERP exposes modern APIs or legacy connectors. A custom connector or an iPaaS at USD 500-3,000/month can cut manual order processing by roughly 40%.
Cost by API maturity
| ERP scenario | 2026 budget | Timeline |
|---|---|---|
| Modern documented REST APIs | USD 40,000-60,000 | 10-12 weeks |
| Partial APIs + middleware | USD 65,000-90,000 | 13-16 weeks |
| Legacy ERP (files/SOAP) | USD 95,000-120,000 | 16-18 weeks |
| Real-time synchronisation | +USD 15,000-25,000 | +2-4 weeks |
| Data migration / mapping | USD 8,000-15,000 | 2-3 weeks |
A modern ERP (clean REST APIs) halves cost and timeline. A legacy system exposing flat files or SOAP forces middleware, retries and heavy error handling — that is where the budget climbs.
Custom connector vs iPaaS
| Criterion | iPaaS (subscription) | Custom connector |
|---|---|---|
| Upfront cost | Low (setup) | USD 40,000-120,000 |
| Monthly cost | USD 500-3,000 | Maintenance ~USD 800 |
| Logic control | Limited to connectors | Total |
| Sync reliability | Good for standard cases | Tuned to your flow |
| Vendor lock-in | High | Low |
| Complex cases / high volume | Cost climbs | Controlled |
iPaaS wins for standard flows and short time-to-value. A custom connector wins on high volumes, atypical business logic, and when the monthly iPaaS subscription eventually exceeds the cost of an amortised build.
Mini case study
Diego, operations VP at a mid-market distributor in Miami, processes 3,000 orders/month with manual re-keying between his site and ERP. Each order costs roughly USD 4 of manual handling, or USD 144,000/year. A custom connector at USD 75,000 automates synchronisation and cuts manual work by 40%, saving ~USD 57,600/year. Return on investment in a little over 15 months, before counting fewer stock errors and fewer customer disputes tied to data gaps.
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What really drives the cost?
ERP API maturity above all: modern REST APIs cost half as much as a legacy flat-file or SOAP system. Volume and real-time needs come next.
iPaaS or custom connector?
iPaaS suits standard flows and a fast start; custom wins on high volumes, atypical logic, or when the monthly subscription overtakes an amortised build.
How long for a typical project?
Between 10 and 18 weeks depending on API maturity and real-time sync needs. A modern ERP connects in 10-12 weeks.
How do you guarantee sync reliability?
Through robust error handling, retries, message queues and monitoring: that is what separates a reliable integration from a flow that breaks silently.
What concrete gain should I expect?
An order of magnitude of 40% less manual order processing, plus fewer stock errors and fewer disputes tied to data discrepancies.
Let's scope your project. Specify your ERP, its API maturity and your order volumes, indicative budget USD 40,000-120,000. 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.
