Two brothers well known in the world of magic and cardistryArt of Play. While its nucleus is the sale of unique decks of playing cards, the site has expanded greatly under the guidance of Adam Rubin, the “Director of Puzzles and Games.”
From their website:
We travel the world in search of objects designed to dazzle the eyes and fascinate the mind. From luxurious playing cards to ingenious puzzles and stimulating amusements—each beautiful item in our collection holds a whisper of mystery, brimming with potential for surprise and delight.
Even if you don’t want to purchase anything, the site has a blog of entertaining entries with articles on optical illusions, puzzles, and magic tricks.