Abstract: A method for coordinating purchases of goods or services comprises the steps of establishing a consumer group (216) including a plurality of members (218A-218n); and establishing a first price discount on a first consumable that is made available to each of the plurality of members (218A-218n) of the consumer group, the first price discount being based on the number of members (218A-218n) in the consumer group (216). The step of establishing a first price discount can include the first price discount being made available to each of the plurality of members (218A-218n) of the consumer group (216) regardless of the number of members (218A-218n) that actually purchase the first consumable. The method can further comprise the step of providing a rebate to a first member (218A) of the consumer group (216), the rebate being based upon a dollar amount of purchases made by one or more members (218A-218n) of the consumer group (216) over a predetermined period of time.