Amazon has sparked a condo-buying frenzy in Long Island City

In January, following a move to Southern California, Edward Jun listed his three-bedroom condo in Long Island City for $2.29 million. Several offers came in: the first at $2.17 million, with the rest dipping even lower. The spread ultimately dropped its price to $2.1 million in May, spending some 300 days on the market. “Open...