Abstract: A transaction management system for managing the purchase of products or services by a buyer comprising: a data store for storing a seller identifier and seller offer data indicating at least one product or service offered for sale; and transaction data for each of a plurality of historical transactions, a transaction identifier, and the seller and a buyer identifier. The system also having a program store storing instructions and a processor coupled to the data store and to the program store for implementing the instructions for controlling the processor to implement a buyer interface to receive a purchase inquiry, output seller offer data for a plurality of sellers, the sellers each being able to meet the purchase criteria; and receive a purchase request accepting an offer. The processor can also analyze the transaction data to determine stability a market.

Abstract: A transaction management system manages the purchase of products and/or services by a buyer from sellers. The system comprises: (a) a data store for storing seller data comprising, for each of a plurality of sellers, a seller identifier and seller offer data indicating at least one product and/or service offered for sale (b) a program store storing processor implementable instructions; and (c) a processor coupled to the data store and to the program store for implementing the stored instructions.

Abstract: A transaction management system is described in which transactions between buyers and sellers are monitored to determine sellers qualifying for guaranteed or underwritten status. The sellers log details of their goods or services with the system which are then presented to buyers together with an indication of the seller's underwritten status. A buyer purchasing from a guaranteed or underwritten seller using the system obtains some form of compensation in the event that the seller does not deliver as promised. In a preferred embodiment, the system selects an alternative service or good for delivery to the buyer by the agreed date using the database of sales data. The sellers are advantageously graded into brands using historical transaction-related data.

Abstract: A transaction management system manages the purchase of products and/or services by buyers from sellers, the system comprising: a data store for storing seller data. Said data comprises, for each of a plurality of sellers, a seller identifier and seller offer data indicating at least one product or service offered for sale; a program store storing processor implementable instructions; and a processor coupled to the data store and to the program store for implementing the stored instructions.

Abstract: A transaction management system is described in which transactions between buyers and sellers are monitored to determine sellers qualifying for guaranteed or underwritten status. The sellers log details of their goods or services with the system which are then presented to buyers together with an indication of the seller's underwritten status. A buyer purchasing from a guaranteed or underwritten seller using the system obtains some form of compensation in the event that the seller does not deliver as promised. In a preferred embodiment, the system selects an alternative service or good for delivery to the buyer by the agreed date using the database of sales data. The sellers are advantageously graded into bands using historical transaction-related data.