This RB report identifies and ranks the Most Expensive Luxury Fashion Brands based on a proprietary methodology that focuses on the Concentrated Premium, which is the sustained, high average price point across a brand’s core product inventory. Unlike rankings based on brand value or single, outlier priced items, this analysis prioritizes brands whose entire product line maintains a significantly higher price floor, effectively excluding “accessible luxury” brands that dilute their average price with high volume, lower cost goods. The resulting list is dominated by the “Ultra Luxury” segment, where craftsmanship, material rarity, and exclusivity are the primary drivers of cost. The Concentrated Premium Index (CPI) The ranking is determined by the Concentrated Premium Index (CPI), a metric designed to quantify the average price concentration of a brand’s core offerings. The user’s requirement to focus on brands where “average prices on their products are higher than others” is addressed by this…