Today, Lucius is at the #12 spot on Forbes Fictional Fifteen:
#12 Malfoy, Lucius
Net Worth: $1.3 billion
Marital Status: Married
Hometown: Wiltshire, England
Education: Hogwarts School of Witchcraft and Wizardry
Wizarding family patriarch best known as advocate for pureblood magicians and for violent hatred of Harry Potter. Caught red-handed burglarizing United Kingdom's Ministry of Magic; now indefinitely incarcerated in Azkaban prison. But imprisonment hasn't hurt his net worth: With the price of gold at record levels, stockpiles of gold galleons have appreciated significantly. Minister of Magic Rufus Scrimgeour reportedly increasing security outside Malfoy's cell in the wake of Dementor guard revolt, fearing escape attempt. Malfoy, unbowed, vows to return to public life: "My race is not yet run." Member since 2005
So the Malfoys aren't millionaires, but BILLIONAIRES?