lead-in price  is the lowest available price for a Travel product, often pertaining to cabins on a cruise ship. Usually, there are only a few staterooms available on board each cruiseliner in this category, but often better accommodations are only slightly higher in price. Rock-bottom price shoppers normally insist on these rates, though they sell out quickly. Often, passengers are not happy with the outcome !
Other definition:
Lead-In Price is that impossibly low advertised price that refers to a few seats on a specific date or a cruise cabin somewhere deep within the bowels of a ship. It"s also the price consumers demand when they contact a travel agent.
List of books: lead-in,price