Business systems with price guarantee and display

1. A method for guaranteeing a consumer a best price on an item purchased from a vendor in a consummated final first transaction at a first price, the method comprising:

recording the first price and information identifying the consumer;

monitoring a sales price of the item for a predetermined time period after purchase of the item by the consumer in the consummated final first transaction;

noting any price lower than the first price for the item during the predetermined time period following the purchase of the item;

calculating a money-value difference between the first price and said any price lower than the first price; and

refunding to the consumer a refund amount equal to the money-value difference,

wherein the item is purchased via a host system and the host system records the first price and information identifying the customer; the host system conducts the monitoring, noting, and calculating steps; and the host system provides the refund to the consumer,

wherein the host system provides the refund by crediting an account of the consumer,

wherein only prices for the item to be sold by the vendor involved in the first transaction are taken into account in the noting step; and

displaying the refund amount.

2. The method of claim 1 wherein the item is purchased by the consumer at a location of the vendor.

3. The method of claim 1 wherein the item is purchased by the consumer on-line via a network system.

4. The method of claim 1 wherein the account is an account of the consumer with the host system.

5. The method of claim 1 wherein said displaying is an individual private display to the consumer.

6. The method of claim 5 wherein the individual display is via email.

7. The method of claim 1 wherein only prices for the item for sale in a pertinent geographic area are taken into account in the noting step.

8. The method of claim 1 wherein said displaying is a public display.

9. A method for a vendor to publicize a total money amount of refunds provided to consumers, the method comprising:

totaling a money amount of a plurality of refunds made to consumers by the vendor producing a totaled money amount;

displaying the totaled money amount in an advertisement;

each refund of said plurality of refunds determined by a guarantee method for guaranteeing a consumer a best price on an item purchased from a vendor in a consummated final first transaction at a first price, the guarantee method comprising:

recording the first price and information identifying the consumer;

monitoring the sales price of the item for a predetermined time period after purchase of the item by the consumer in the consummated final first transaction;

noting any price lower than the first price for the item during the predetermined time period following the purchase of the item;

calculating a money-value difference between the first price and said any price lower than the first price; and

refunding to the consumer a refund amount equal to the money-value difference,

wherein the item is purchased via a host system and the host system records the first price and information identifying the customer; the host system conducts the monitoring, noting, and calculating steps; and the host system provides the refund to the consumer,

wherein the host system provides the refund by crediting an account of the consumer, and

wherein only prices for the item to be sold by the vendor involved in the first transaction are taken into account in the noting step.

10. The method of claim 9 wherein said displaying is an individual private display to the consumer.

11. The method of claim 10 wherein the individual private display is via email.

12. The method of claim 9 wherein said displaying is via email to a plurality of entities.

13. The method of claim 9 wherein said displaying is via email to the consumers.

14. An apparatus for guaranteeing a price comprising:

a host system configured to:

receive a first price of an item and information identifying a consumer associated with a consummated final first transaction with a vendor;

monitor a sales price of the item for a predetermined time period after the consummated final first transaction;

record at least one lower price during the predetermined time period, wherein the lower price is lower than the first price, and wherein only prices for the item to be sold by the vendor involved in the first transaction are taken into account;

calculate a money-value difference between the first price and the lower price;

refund to the consumer a refund amount equal to the money-value difference by crediting an account of the consumer; and

display the refund amount.

15. A system for guaranteeing a price comprising:

means for receiving a first price of an item and information identifying a consumer associated with a consummated final first transaction with a vendor;

means for monitoring a sales price of the item for a predetermined time period after the consummated final first transaction;

means for recording at least one lower price during the predetermined time period, wherein the lower price is lower than the first price, and wherein only prices for the item to be sold by the vendor involved in the first transaction are taken into account;

means for calculating a money-value difference between the first price and the lower price;

means for refunding to the consumer a refund amount equal to the money-value difference by crediting an account of the consumer; and

means for displaying the refund amount.

16. A computer-readable medium having stored thereon computer executable instructions that, if executed by a host system, cause the host system to perform a method comprising:

receiving a first price of an item and information identifying a consumer associated with a consummated final first transaction with a vendor;

monitoring a sales price of the item for a predetermined time period after the consummated final first transaction;

recording at least one lower price during the predetermined time period, wherein the lower price is lower than the first price, and wherein only prices for the item to be sold by the vendor involved in the first transaction are taken into account;

calculating a money-value difference between the first price and the lower price;

refunding to the consumer a refund amount equal to the money-value difference by crediting an account of the consumer; and

displaying the refund amount.

17. The computer-readable medium of claim 16 , wherein displaying the refund amount comprises displaying an advertisement.

18. A method for guaranteeing a price comprising:

receiving, at a commerce server, a first price of an item and information identifying a consumer associated with a consummated final first transaction with a vendor from a merchant computer;

monitoring, at the commerce server, a sales price of the item for a predetermined time period after the consummated final first transaction;

recording, at the commerce server, at least one lower price during the predetermined time period, wherein the lower price is lower than the first price, and wherein only prices for the item to be sold by the vendor involved in the first transaction are taken into account;

calculating, at the commerce server, a money-value difference between the first price and the lower price;

issuing, via the commerce server, a refund amount equal to the money-value difference by crediting an account of the consumer; and

providing, via the commerce server, the refund amount to a customer computer for display.

19. The method of claim 18 , wherein providing the refund amount to a customer computer for display comprises providing an advertisement.

20. The method of claim 18 , wherein the item is purchased by the consumer on-line via a network system.