Zhè zhǒng shāngpǐn shìmiàn shàng yǐjīng hěn nán zhǎodào le.
This kind of product is now very hard to find on the market.
Tips
usage
市面 typically pairs with 上 in the phrase 市面上 (on the market). It refers broadly to what is commercially available or circulating in the general market, not a specific marketplace or store.