Sur-charges are fees added to the base cost of a product or service. Antonyms for sur-charges, on the other hand, would refer to discounts or rebates that reduce the cost of the product or service. Some antonyms for sur-charges include markdowns, deductions, reductions, waivers, and exemptions. These terms describe situations where the cost of a product or service is lowered or eliminated due to various factors such as promotions, special offers, or loyalty programs. While sur-charges can be frustrating for consumers, antonyms like discounts and rebates provide a sense of relief and reward for smart shopping and faithful patronage.