108% growth in Google Ads revenue.

The problem

Self Inking Stamps is a New Zealand online retailer specialising in customised self-inking stamps for businesses and individuals. Increased advertising investment had to keep producing a strong return — not just more spend.

The brief

Grow online sales through Google Ads while making sure extra budget still earned its keep.

The result

Comparing March–August 2026 with the same six-month period in 2025, Google Ads revenue rose 108% (about $23,400 to $48,600) with 59% more conversions and a 9% lower cost per conversion. Spend was up 45%, but revenue more than doubled, so ROAS improved from 2.45x to 3.51x. The account scaled — more revenue, more conversions, and more efficient at the same time.