The Banjo Buyer "Search Agent" tool allows you to "subscribe" to particular searches, so you are emailed whenever a new banjo is posted for sale which meets your search criteria.
Setting up a search agent is easy! Just run a search, then enter your email address on the search results page and click the "Save this Search" button. You will now be emailed whenever a banjo is posted for sale which meets your search criteria.
You can always unsubscribe from a saved search by clicking the link supplied in the search agent emails.