26 CFR §403.57

1. (a)No recourse. All personal property to be sold shall be offered for sale “as is” and without recourse against the United States.
2. (b)No guarantee. No guarantee or warranty, expressed or implied, shall be given or understood in respect of any forfeited property offered for sale.
3. (c)No sale.
   1. (1)The United States reserves the right to reject any bids.
   2. (2)In a case in which all bids are rejected the Commissioner or his delegate shall re-advertise the property for sale in the manner prescribed in § 403.55.
4. (d)One bid. When only one bid is received for a single unit of property such bid shall be the highest bid received for such property.