The verdict in three sentences
For a haulier whose website generates quote requests, a maintenance retainer with an SLA at EUR 250 to 500 a month excluding VAT is usually the right level in 2026. The basic plan at EUR 80 to 150 covers updates and backups but guarantees no response time. Full application maintenance from EUR 800 a month makes sense once the site connects to a TMS, a customer portal or tracking APIs.
The three retainer levels in 2026
Two outages in 2025, a plugin update that breaks the form and an SSL certificate expiring on a weekend are enough to show the limits of ad hoc maintenance.
| Level | Scope | Price excl. VAT 2026 | Response time |
|---|---|---|---|
| Essential | CMS and plugin updates, daily backups, SSL certificate | EUR 80 to 150/month | 2 to 3 business days |
| SLA | Essential + 24/7 monitoring, 5-min alerts, monthly form test, 2 h of changes | EUR 250 to 500/month | Response within 4 business hours |
| Application maintenance | SLA + on-call, planned fixes and changes, TMS and API monitoring | EUR 800 to 2,000/month | 1 to 2 h, weekend on-call optional |
| Ad hoc time and materials | On-demand work, no commitment | EUR 450 to 600/day | Subject to availability |
| Weekend on-call add-on | Saturday and Sunday cover | EUR 150 to 300/month | 2 h |
| Annual security audit add-on | Vulnerability scan, report | EUR 600 to 1,500/year | Scheduled |
The SLA must state three numbers: response time, target restoration time (for example 8 business hours for a blocking outage) and measured uptime (99.5 % or 99.9 %). Without them, a so-called premium contract commits to very little.
Retainer, ad hoc or nothing: the maths for a haulier
The right question is not the retainer price but the cost of downtime. For a 120-truck haulier, the quote form feeds a meaningful share of new business.
| 12-month scenario | Direct cost | Associated risk |
|---|---|---|
| No retainer, ad hoc on failure | 2 to 4 days of ad hoc, EUR 900 to 2,400 | Unknown response time, 2 to 5 day outage |
| Essential plan | EUR 960 to 1,800 | Updates done, no monitoring |
| SLA plan | EUR 3,000 to 6,000 | Outage detected in 5 min, handled in 4 h |
| Application maintenance | EUR 9,600 to 24,000 | Suited to TMS, portal, APIs |
| One day without the form | 8 to 15 lost requests | EUR 3,000 to 12,000 of potential margin |
With an average quote value of EUR 1,500 and a 25 % conversion rate, each day of downtime can mean several thousand euros of missed margin, plus damage to your image with shippers.
What to check before signing
Ask for the exact list of monitored items (homepage, form, email delivery, response time), the monitoring tool used, backup frequency and retention (30 days minimum), an annual restore test and rollover of unused change hours. Require a monthly report with actual uptime. Finally, check reversibility: admin access, source code and backups must remain yours when the contract ends.
Mini case study
Aoife, head of administration at a 120-truck haulier in Dublin, went through two outages in 2025: 3 days without the form in March, 2 days in October. The company receives about 10 quote requests per business day through the site, 25 % of which become customers, at an average margin of EUR 400 per deal. The 5 days of downtime cost about 50 requests, 12 to 13 deals and nearly EUR 5,000 of margin, plus EUR 1,800 of emergency ad hoc work.
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She signs an SLA plan at EUR 390 a month with weekend on-call at EUR 180, EUR 6,840 a year excluding VAT. In 2026, a monitoring alert at 6 am lets the team fix an email delivery issue before the office opens. A single avoided 3-day outage covers nearly half of the annual contract.
FAQ
Is the EUR 80 plan enough for a brochure site?
Yes, if the site does not generate critical sales requests. Once a quote form matters, the SLA plan from EUR 250 becomes relevant.
What does a 4-hour SLA mean?
The provider commits to start handling the incident within 4 business hours. Restoration time, often 8 hours for a blocking outage, must be written separately.
Are unused change hours lost?
It depends on the contract. Good contracts roll the 2 monthly hours over for up to 3 months.
Can we switch provider mid-contract?
Yes, usually with 1 to 3 months' notice. Make sure access credentials, backups and documentation are handed over at no cost.
Do we need application maintenance if the site connects to our TMS?
It is recommended: a broken TMS interface blocks quotes or shipment tracking. Application maintenance starts around EUR 800 a month for this scope.
Let's scope your project. Send us your site address, its integrations and outage history, and we will recommend the right retainer, between EUR 80 and 800 a month, with written response commitments. 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.

