The present invention enables the purchase of perishable objects by ascertaining and attaching a value to the certainty that the perishable object will be available and adjusting the value of the product or service for purchasers willing to pay the discounted value on the condition that the perishable...http://www.google.co.uk/patents/US7249062?utm_source=gb-gplus-sharePatent US7249062 - Method for transacting for a perishable object having an uncertain availability