Imaginarium The Polar Express Wood Set for $29.98. Order online for in-store pickup at Toys “R” Us to lock in the price, ensure availability, and save on shipping. Otherwise, shipping is $7.30 for a total of $37.28 shipped. Here is a screenshot for your reference. This toy building set features a classic children’s book and movie, tells the story of a young boy’s struggle to solve the mystery of Santa Claus while aboard a very special train called the Polar Express, which transports wide-eyed kids on a hair-raising adventure to the Northe Pole. Most places have it for about $49.