The rarest steak in the world can cost over $300. Here's why wagyu beef is so expensive.

Wagyu beef from Japan is the most prized beef in the world. High-grade wagyu can cost up to $200 per pound. The rarest steak in the world, olive wagyu, can cost anywhere from $120 to over $300 for a steak. Wagyu calves can be 40 times the price of US"...