Retail Arbitrage is a business practice where individuals buy products at a lower price from retail stores and then resell them at a higher price, often online. This strategy allows sellers to take advantage of price differences between various marketplaces, such as local stores and e-commerce platforms like Amazon or eBay. To succeed in retail arbitrage, sellers typically use tools to scan barcodes and compare prices. They look for clearance items, discounts, or seasonal sales to maximize their profit margins. This method can be a flexible way to earn income, but it requires research and market knowledge to be effective.