Mr Biden's venture into the world of art is posing a serious quandary for the lawyers of his father, President Joe Biden.
There's no recommended retail price for an original painting.
Buyers make an offer, and the dealer accepts.
So while an unscrupulous operator can't hand Joe Biden a briefcase full of a million dollars, they can decide to offer $1 million for one of his son's paintings.
Walter Shaub, who headed the Office of Government Ethics under the Obama Administration, was outraged by the younger Biden's venture into art.
"There is no ethics program in the world that can be built around the head of state's staff working with a dealer to keep the public in the dark about the identities of individuals who pay vast sums to the leader's family member for subjectively priced items of no intrinsic value," he tweeted.
