Stabiae was an ancient Roman town near the modern town of Castellammare di Stabia and approximately 4.5 km southwest of Pompeii, and which became famous for the magnificent Roman villas found there in recent times. The beautiful objects and frescoes taken from these villas were often sold and distributed, while many can be found in the National Archaeological Museum of Naples.
It's illegal to sell the objects and frescoes from Stabiae.
Nothing in the snippet says if it's illegal or not to sell these - clearly they were sold at one point.  