US$20 to US$46 per metric ton was the range of costs for holding food reserves reported for African countries, according to the review cited in the chapter.
Torero (2016)
Torero, M. (2016). Alternative mechanisms to reduce food price volatility and price spikes: Policy responses at the global level. In M. Kalkuhl et al. (Eds.), Food Price Volatility and Its Implications for Food Security and Policy. Springer. https://opsaa.iica.int/en/resource-2747-alternative-mechanisms-to-reduce-food-price-volatility-and-price-spikes-policy-responses-at-the-global-level