Comment: Direct answer do that specific question

(See in situ)

Direct answer do that specific question

If you are the Dealer (the one with the storage area which backs up the currency) - You list the bicycle and a bunch of other stuff. Then you advertise your stuff. When someone wants your stuff you give them your dealer link and tell them to join as a vendor. They send YOU a credit request in order to get enough credits to trade for your bicycle. The credit request is attached to something that they have lying around they don't want/use anymore.

In your case there... you would be attaching the bicycle to a credit request for your local dealer. You can then use those credits to trade for something in his inventory.