Current average price per pound (in $U.S.) of Alba’s white truffles from the world’s leading purveyor, Urbani Truffles. Fortunately, a little goes a long way—a single ounce of these heady fungi could gratify two enthusiastic diners. From Piedmont, Italy, white truffles (Tuber magnatum) are in season from mid-September through December, and can cost up to ten times more than black truffles. The most expensive white truffle ever sold went for $115,385 per pound.