Unavailable for sale are units that cannot be sold. Below are reasons why units can be unavailable.
Customer orders
These units are not available for sale because they are reserved for an order. Once shipped, these units appear as orders. 
Processing at FC
These units are not available for sale because fulfillment centers have not yet moved them into a pickable location. This means these units have been received but are not yet in a location in the fulfillment center from which an associate can pick. If units are not available past their estimated receiving time (based on resources here), please contact Deliverr Support.
Transferring FCs
These units are not available for sale because Deliverr decided to move them between fulfillment centers. There are 2 reasons why Deliverr might move units between fulfillment centers:
- Deliverr wants to improve your Fast Tag coverage. By proactively moving units between fulfillment centers--at no cost to you--Deliverr increases your Fast Tag coverage.
- Deliverr is closing a fulfillment center.
Temporary FC closure
These units are not available for sale because the fulfillment center(s) are closed due to weather or another unexpected reason. One these fulfillment centers are opened, units become available for sale.