The present invention provides a magnetic recording medium which has a thin film magnetic layer considerably excellent in surface smoothness, and is excellent in electromagnetic conversion property. The dynamic pricing bands represent approximate rates for travel services relative to available rates during or close to the proposed dates of travel, or at or near the proposed travel destination. Furthermore, in the single pinion planetary gear mechanisms, a third carrier is linked to the input shaft disengageably by a second control clutch and a fourth carrier is linked to an output shaft. One or more electrical conductors are fixed in place, extending through at least a portion of the pole, terminating in an electrical contact for releasable engagement with a cooperating electrical contact mounted to the carriage as the carriage is raised into the elevated position.