noun, noun which may take the genitive case particle 'no'
Refers to a high price level, often used in economic or commercial contexts. Can modify nouns with の.
高価格の商品はなかなか売れない。
High-priced products don't sell easily.
この地域の住宅は高価格だ。
Housing in this area is expensive.
高額 also means 'large amount of money' or 'high price', but is often used for sums of money, fees, or prizes, whereas 高価格 focuses on the price tag of goods or services.
Compound of 高 (high) + 価格 (price). The exact historical derivation is uncertain, but the meaning is transparent from its components.