My major takeaway was how cheaply they tested this idea. Waiting for someone to sell this as a provider-as-a-service to VCs, so they can quickly get a real world estimate of TAM.

For $1k in spend and a day's work, they had a nice data point that tested TAM assumptions.

* Landing page is a template, figure 4-8 hours to put together the couple hundred words of content and configuring assets

* FB Spend = $509.23

* Estimate Google spend around the same (numbers not specified)