Facebook Ads Cost Per Purchase Benchmarks in South Africa

Introduction

The headline: South Africa’s cost per purchase was far more erratic than the global benchmark over the sampled months — punctuated by two extreme spikes that pushed the mean well above the market average, while the median sat slightly below it. This analysis is based on $3B worth of advertising data from our dataset, which provides strong directional benchmarks. This analysis explores ad performance trends for All industries in South Africa compared to the global benchmark.

The story in the data

Cost per purchase (COST_PER_PURCHASE) in South Africa averaged about $116 across the sampled months, driven up by two massive outliers: a peak of $482.50 in September 2025 and a second spike of $409.72 in May 2026. The lowest observed value was essentially negligible in July 2025 at $0.15, and the series closed at $18.35 in June 2026. The median cost per purchase in South Africa was roughly $44.7 — a figure that sits below the global monthly average of about $50.0 for the same months, highlighting a strongly skewed distribution where a few months dominate the mean.

Key moves: an initial near-zero reading in July 2025 jumped to $47 in August and then exploded to $482 in September (more than a 3,000x increase from the July trough). After the September peak, cost fell by about 91% to roughly $42 by December. A fresh surge occurred from April to May 2026 (from about $25.5 to $409.7, roughly a 16x jump), followed by a 95% drop into June.

Seasonal and monthly dynamics

Rhythm in the South Africa series is punctuated rather than rhythmic: long stretches of mid-range costs (low- to mid-$40s into low $50s across winter months) are interrupted by sudden, large spikes in late Q3 2025 and late Q2 2026. Volatility is episodic — spikes last one to a few months and are followed by rapid reversion to mid-range levels. The baseline (global) pattern, by contrast, shows modest seasonal variation with gentle swings between about $42 and $56 across the year.

Country vs. Global

Over the shared months, the global benchmark averaged roughly $50 while South Africa’s mean was about $116 — more than double — but that gap narrows when using the median ($44.7 in South Africa vs global mean $50), indicating that extreme outliers drive the higher South Africa average. Month-to-month absolute movement in South Africa averaged about $193 versus about $3 for the global benchmark over the same intervals — a roughly 60x greater monthly swing, i.e., far more volatile.

Understanding Facebook Ads cost-per-purchase benchmarks and country-specific ad costs for All industries in South Africa helps advertisers interpret spikes, skew, and how South Africa’s industry ad performance diverges from broader CPM analysis and CPC trends in global Facebook Ads benchmarks.