The world’s richest person Elon Musk says he has sold out of Burnt Hair, his newly announced perfume being marketed as the “essence of repugnant desire.” The apparent joke perfume cost $100 or €105 a bottle, making it perhaps the world’s most expensive perfume to have an offensive and off-putting name. Nevertheless, Musk said on Wednesday he had sold 30,000 bottles of the fragrance, or the equivalent of $3 million in sales, barely a week after announcing the product to his 109 million followers on Twitter. Musk, the tech innovator behind SpaceX, Tesla and other enterprises, has been selling th…