How We Built a Domain Marketplace With Google Ads for Under $5K

The build log for Smart City Credits — a lean domain marketplace experiment

Smart City Credits started as an experiment: could we build a functional domain marketplace and drive real buyer traffic using Google Ads — all on a startup budget?

The total build and initial ad spend came in under $5,000. Here's the complete breakdown.

The Concept

Smart City Credits is a domain marketplace focused on premium domain names related to smart city technology, municipal services, and urban innovation. The thesis was simple: as cities invest billions in smart infrastructure, the companies building that infrastructure need strong domain names. We wanted to be the marketplace connecting domain owners with those buyers.

The challenge was doing this lean. Traditional domain marketplaces like Sedo or Afternic have massive overhead. We needed something that could launch fast, test the concept, and scale only if the numbers worked.

Building the Marketplace

We chose Google Sites as the platform. This might sound unusual for an ecommerce play, but for a marketplace in the testing phase, Google Sites offers zero hosting cost, built-in SSL, fast deployment, and seamless integration with Google's ecosystem.

The site structure was straightforward: a homepage showcasing featured domains, category pages organizing domains by sector (transportation, energy, municipal services, etc.), individual domain listing pages with descriptions and pricing, and a contact form for purchase inquiries.

Each domain listing included the domain name, asking price, a brief description of why the domain has value, and comparable sales data where available. We used GoDaddy for domain registration and management, keeping all the inventory in one registrar for simplicity.

The Google Ads Strategy

We ran a Google Ads pilot at $300/month to test whether we could drive qualified buyer traffic to the marketplace. The targeting focused on keywords related to smart city technology procurement, municipal technology, and specific domain-related search terms.

We tested both search ads and display ads, with search significantly outperforming display for this type of product. The ad copy emphasized the investment value of premium domains and the specificity of the smart city niche. Generic "buy domains" advertising is a bloodbath in terms of cost-per-click. But niche terms like "smart city domain names" or "municipal technology branding" had much lower competition and cost.

What the Numbers Showed

At $300/month in ad spend, we generated consistent traffic to the marketplace with reasonable cost-per-click numbers for the domain industry. We tracked everything through Google Analytics and Search Console, measuring which domains got the most views, which ad copy drove the best click-through rates, and which landing pages converted visitors to inquiry form submissions.

The data told us which categories of domains generated the most interest, which price points attracted serious buyers versus browsers, and which ad keywords delivered qualified traffic versus tire-kickers.

Lessons From the Build

First, Google Sites works surprisingly well for MVP marketplace builds. It's not a long-term platform for a serious marketplace, but for concept validation it eliminates every barrier to launch.

Second, Google Ads for niche markets can be very cost-effective. The key is specificity — the more targeted your keywords, the lower your competition and cost.

Third, domain marketplaces are a patience game. The sales cycle is measured in months, not days. The marketplace needs consistent traffic and a growing inventory to build momentum.

The Result

Smart City Credits launched as a functional domain marketplace with organized listings, a Google Ads campaign driving targeted buyer traffic at $300/month, analytics showing clear patterns in buyer interest, and a total project cost under $5K including three months of ad spend.

Have a marketplace idea you want to test? We build MVPs fast and set up the ad infrastructure to validate demand. Book a free consultation or email info@boltaitools.com.