1. A dynamic pricing system for pricing items for sale by a seller which items are available in a limited quantity, the system comprising: a pricing server including memory, a processor and a clock; data stored in memory indicative of the initial quantity of an item available in a limited quantity; data stored in memory indicative of the current remaining quantity of the item available in a limited quantity; data stored in memory of an expiration time at which it is desired that all of the item available in a limited quantity be sold; and wherein the processor is configured to price the item available in a limited quantity so as to deplete the inventory of the item available in a limited quantity by the expiration date based in part by accessing the memory to retrieve the data indicative of the initial quantity, the current remaining quantity and the expiration time and accessing the clock.