In short
Our best documented e-commerce return is 733% ROI on a Google Ads account: $21,542 in sales against $6,063 of spend across three months.
Whether that is good depends entirely on gross margin, and a ROAS quoted without margin attached is not a business result. It is a ratio.
The documented returns
| Business | Channel | Documented outcome |
|---|---|---|
| Automotive parts provider | Google Ads | $21,542 sales on $6,063 spend, three months |
| Premium auto parts seller | Google Ads | $73,306 in sales on a $1,000 monthly budget |
| Automobile e-commerce store | Meta Ads | Revenue up 65% over four months |
| Automotive performance products | Meta Ads | 201 sales at $124.08 cost per sale |
| Macaron manufacturer | Meta Ads | Cost per lead from $28.54 to $9.97 in two months |
| Synthetic oils retailer | SEO | Organic visibility for a lubricants catalogue |
The premium auto parts figure is the one that looks most impressive and needs the most context: $73,306 of sales value on a $1,000 monthly budget. Sales value is revenue, not profit, and on parts distribution the gap between those two is the whole business.1
The margin question
A 4x return on ad spend is excellent at a 70% gross margin and loss-making at a 20% one. This is not a subtlety; it is the difference between a campaign that funds the business and one that quietly drains it while reporting success.
Why we report cost per sale where we can
The automotive performance engagement is reported as 201 sales at $124.08 each rather than as a multiple. That is a deliberately less flattering way to present the same campaign, and a far more useful one: a cost per sale can be put straight against a unit margin, where a ROAS multiple has to be unpacked first.3
Sources
- Automotive Parts Provider: 733% ROI across three months. Monastic Marketing case study. Read September 29, 2026.
- Automotive Performance Products: 201 sales at $124.08. Monastic Marketing case study. Read September 29, 2026.
- Automobile E-Commerce Store: revenue up 65%. Monastic Marketing case study. Read September 29, 2026.