The verdict in three sentences
A B2B marketplace launching in Adelaide has to convince two audiences at once, buyers and suppliers, and the clarity of those two journeys matters far more to the site's success than the choice of provider. The marketing site is separate from the platform itself: the platform is a custom application priced on quote, while the site can be built quickly at a fixed price (Kolonell Growth at USD 4,900, Premium at USD 8,900). Choose an Adelaide agency if your model still changes every week and you want to iterate in person, and a remote studio once the model and fees have settled.
How does one site serve two audiences without contradicting itself?
Adelaide's ecosystem is best known for the space industry around Lot Fourteen, defence tech, wine and agtech. A local marketplace often links players in those sectors, and the two sides use different vocabulary and raise different objections.
| Element | Buyer side | Supplier side |
|---|---|---|
| Dedicated landing page | Find, compare, order | Win customers without cold outreach |
| Fees page | Final price shown clearly | Commission and payout terms made clear |
| Sign-up | Business account, internal approval | Supplier application, documents requested |
| Trust | Supplier vetting process described factually | Payment timing and dispute rules |
| FAQ | Delivery, returns, invoicing | Visibility, fees, cancellation |
| Testimonials | Only with written consent | Only with written consent |
| Category pages for search | One page per category | One page per supplier type, search work on quote |
The fees page deserves special care: Australian Consumer Law prohibits misleading advertising and requires prices and surcharges to be shown clearly, which applies to a commission or service fee too.
Adelaide agency or remote studio: what decision grid?
South Australia runs on ACST (UTC+9:30), then ACDT (UTC+10:30) in summer, since it observes daylight saving unlike Queensland. Kolonell's project manager is reachable in that time zone.
| Your situation | Lean toward | Why |
|---|---|---|
| The commission model still changes monthly | Adelaide agency | Frequent in-person workshops, in the CBD or at Tonsley |
| Brand, name and logo still to be created | Adelaide agency | Deeper brand strategy work |
| You film suppliers in the field, at the winery or workshop | Local crew | Simpler shoot logistics |
| Both journeys are defined and fees are settled | Remote studio | Live in 3 to 4 weeks at a fixed price |
| You want to publish each new category yourselves | Either | Require a CMS your team can edit |
| You plan an in-house designer within the year | Either | Require source files, access and documentation |
This grid does not rank anyone: a fast-moving funded startup can perfectly well prefer an agency it sees every week.
What budget over three years?
2026 ballpark from typical local agency quotes, in AUD converted approximately to USD (AUD 1 is about USD 0.65). A build at an Adelaide agency costs AUD 10,000 to 35,000, so USD 6,500 to 22,800. Monthly figures are market assumptions, over 36 months.
| Provider | 3-year spend (USD, approximate) | What makes up the total | Makes sense when |
|---|---|---|---|
| Adelaide freelancer | USD 9,150 to 22,050 | Build USD 1,950 to 5,850, plus USD 200 to 450 a month | Small scope, one audience |
| Adelaide agency | USD 25,220 to 81,300 | Build USD 6,500 to 22,800, plus USD 520 to 1,625 a month | Weekly in-person iterations |
| East coast marketplace agency | USD 52,250 to 129,000 | Build USD 16,250 to 39,000, plus USD 1,000 to 2,500 a month | Deep product expertise, large budget |
| Kolonell Growth | USD 4,900, then maintenance on quote | Fixed price, 3 months of support included | Two defined journeys |
| Kolonell Premium | USD 8,900, then maintenance on quote | The multilingual tier, languages set in the quote | Export buyers or suppliers |
Tiers are detailed on the international offer page.
What should you ask both types of provider?
- Will the site's domain, hosting and code be in our name?
- How does the marketing site connect to the platform (sign-up, log-in)?
- Who writes the fees page, and who signs it off?
- Where does sign-up form data go, and who can access it?
- Does the site target WCAG 2.2 AA, with an accessibility statement?
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
On data, the Privacy Act 1988 applies to businesses with turnover above AUD 3 million, with exceptions, so a fast-growing marketplace should plan ahead. This is not legal advice.
Mini case study
Illustrative example: Sophie Marchetti co-founds a marketplace linking McLaren Vale wineries with packaging and logistics suppliers. An Adelaide agency quotes AUD 24,000, about USD 15,600, plus AUD 1,500 a month, about USD 975. She picks Growth at USD 4,900 with two separate journeys and pays a local photographer AUD 900, about USD 585 (third-party cost). Year one: USD 15,600 + 11,700 = USD 27,300 with the agency, against USD 5,485 with the studio, with maintenance after month three on quote.
FAQ
Does the site include the marketplace itself?
No, the transactional platform is a custom application priced on quote. The Growth marketing site at USD 4,900 presents the offer and routes visitors to sign-up.
Do we need two sites, one per audience?
Rarely: one site with two clear journeys is enough in most cases. Plan 2 dedicated landing pages and 1 fees page per audience.
What does an Adelaide agency cost?
Around AUD 10,000 to 35,000 for the build, so USD 6,500 to 22,800 (2026 ballpark). Monthly retainers are often added.
How long does a remote build take?
3 to 4 weeks at Kolonell once fees and journeys are approved. A local agency usually quotes 8 to 12 weeks.
Is the time difference a problem?
Adelaide is at UTC+9:30, or UTC+10:30 in summer. Kolonell's project manager works to your hours, with 4 to 6 checkpoints per project.
Let's scope your project. A B2B marketplace site with buyer and supplier journeys, USD 4,900 to 8,900, live in 3 to 4 weeks. See the international offer or request a free quote: detailed reply within 48 hours.
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.