Hunter Biden checked out of a Manhattan hotel Thursday following a party to celebrate his solo art show — as controversy over the $500,000 price tags on some of his paintings apparently killed a plan to open the exhibit to the public. The first son didn’t comment as he and wife Melissa Cohen — both wearing red outfits — left the Greenwich Hotel with their 1-1/2-year-old son, Beau, shortly before noon. The night before, the novice, self-taught artist joined about 60 guests — including President Biden’s sister, Valerie Biden Owens — at the Georges Berges Gallery in Soho, where Hunter...