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One of the primary drivers of sodium metabisulfite pricing is the cost of raw materials. The production of sodium metabisulfite typically involves the reduction of sodium bisulfite, which is derived from sulfur dioxide. Fluctuations in the availability and price of sulfur and other raw materials due to environmental regulations, supply chain disruptions, or changes in market demand can significantly impact the final price of sodium metabisulfite. For instance, a surge in sulfur prices can lead manufacturers to pass these costs onto consumers, thereby increasing sodium metabisulfite prices.

Also known as wine stabilizer, potassium sorbate produces sorbic acid when added to wine. It serves two purposes. When active fermentation has ceased and the wine is racked for the final time after clearing, potassium sorbate renders any surviving yeast incapable of multiplying. Yeast living at that moment can continue fermenting any residual sugar into CO₂ and alcohol, but when they die, no new yeast will be present to cause future fermentation. When a wine is sweetened before bottling, potassium sorbate is used to prevent refermentation when used in conjunction with potassium metabisulfite. It is primarily used with sweet wines, sparkling wines, and some hard ciders, but may be added to table wines, which exhibit difficulty in maintaining clarity after fining.