The war in Iran has sent shockwaves through the global oil market, causing gas prices to surge in the U.S. and prompting e-commerce giant Amazon to impose its own fuel surcharge on sellers using its distribution network.

Starting April 17th, Amazon will levy a 3.5% charge on all products sold via its Fulfillment by Amazon service (FBA). This move comes as similar charges from other major carriers are already in place, reflecting the ongoing rise in transportation costs.

The spokesperson for Amazon said that elevated fuel and logistics costs have increased operating expenses across the industry, but added that the surcharge is ‘meaningfully lower’ than those applied by competitors. Despite this, the change could prove a significant financial burden on sellers already struggling with rising input costs.

Amazon first introduced such a surcharge in 2022, just as crude oil prices hit over $100 a barrel—back then due to Russia’s invasion of Ukraine. Today, Iran’s strategic location and its attempts to block shipping lanes through the Strait of Hormuz have once again sent energy markets into turmoil.

The new policy is likely to be met with mixed feelings by sellers who rely on Amazon for their product distribution. While some may see it as a necessary price adjustment, others could view it as another cost they must bear in these volatile economic times.