If only 1.5% of art thieves are caught and prosecuted, that suggests it's not nearly as difficult to sell stolen art as the rest of the article implies.

Wikipedia seems to think the real rate is "somewhere between 5% and 10%" - which still suggests it's a relatively low-risk crime, roughly in line with other kinds of burglary, but potentially far more lucrative.

While galleries won't usually touch art known to be stolen, it's hard to believe there are no buyers for prestige high-value stolen works among oligarchs with criminal backgrounds of their own.