Burger King to Sell <br />'Ghost Whopper' <br />for Halloween To emulate a ghost, the spooky sandwich will be served on a white cheddar bun. The "Ghost Whopper" will go on sale October 24, but will be available in just 10 select locations. The chain is selling the <br />limited-time item for $4.59. The locations are in 10 different cities, which include Detroit, San Diego, Memphis, Philadelphia, San Antonio, San Francisco, Summerville, SC, <br />and Phoenix. They will also sell in select <br />Burger Kings in Savannah, Georgia, <br />and New Orleans, Louisiana. Both cities are known for being <br />two of the most haunted in America.