The most sought-after item is the definitive biography, which contains detailed secrets of his illusions:

: Original posters, portraits, and letters are occasionally sold through specialty auctioneers like Potter & Potter Auctions , with items sometimes fetching between $400 and $600 . 2. Magic Tricks & Illusions

Since he was a person (1847–1903) and not a current brand, you cannot buy products directly from him, but his influence remains in magic shops and auction houses. 1. Books and Biographies

De Kolta invented several "staples" of modern magic that you can still buy today from various manufacturers: Buatier de Kolta Genius of Illusion-Peter Warlock - eBay