After winning the Angoulême Grand Prix in 2017, Cosey cemented his status as a major figure in the world of comics alongside André Juillard, Hermann, and François Boucq. Among the most sought-after pieces are the gouache-painted covers for Jonathan, such as the one for Le Berceau du Bodhisattva, which sold for 21,060€ (Daniel Maghen Auctions, 2025). Regularly featured at auctions, his entire body of work appeals to a wide audience through its evocative quality and the high standards of his craftsmanship. The panels from In Search of Peter Pan and Journey to Italy remain the most sought-after by fans of the genre. Finally, it is worth noting the excellent price achieved by panel No. 52 from Celle qui fut, which sold for €18,760—three times its estimate (Daniel Maghen Auctions, 2022).