Among the chocolate you can buy here they sell their La Madeline au Truffe.
La Madeline au Truffe starts with a decadent 70% Valrhona dark chocolate, heavy cream, sugar, truffle oil and vanilla as the base for the rich decadent ganache. A rare French Perigord truffle (a rare mushroom) is then surrounded by this rich decadent ganache; it is enrobed in Valrhona dark chocolate and then rolled in fine cocoa powder. The result is pure extravagance! Lying on a bed of sugar pearls in a silver box tied with a ribbon.
1.9 oz cost only USD 250.