Create A rule named “Sales”:

If a contractor is not the creator of a currently valid Sale, that Contractor may create one by performing the following atomic action:

*Reducing their Resources by any amount
*Posting a Story Post blog entry with a title that includes the words “Sale” and listing the quantities of Resources removed in the previous step (and only those Resources), as well as a minimum price

Any Contractor that is not the creator may respond to a Sale with a comment in the format “Bidding $XB”, where X is a non-negative integer greater than or equal to the minimum price: such a comment is known as a Bid. If the value stated in a Bid is less than or equal to its Bidder’s Funds, and it is not equal in value to an earlier Valid Bid on the same Sale, then it is a Valid Bid.

If a Sale is more than 24 hours old and no Contractor has made a Valid Bid on it in the past 24 hours, then any Contractor or the Great Eccentric may close the Sale by posting a comment to that effect on that Sale: upon doing so, the Contractor with the highest Valid Bid on the Sale pays Funds equal to that Bid’s value to the sale’s creator, and gains the Resources listed in the Sale. If no valid bid has been made, increase the resources of the creator of the sale by those listed in the sale. The Sale then ceases to be a Sale.