((a)) ** .—** If at any time during any action or proceeding under this chapter the court determines on its own initiative or upon motion of any party, that any seized or detained personal property is likely to perish, waste, or be destroyed, or otherwise substantially depreciate in value during the pendency of the proceeding, the court shall order a commercially reasonable sale of such property.

((b)) ** .—** Within 5 days after such sale, the proceeds shall be deposited with the clerk of the court, accompanied by a statement in writing and signed by the United States marshal, to be filed in the action or proceeding, stating the time and place of sale, the name of the purchaser, the amount received, and an itemized account of expenses.

((c)) ** .—** For purposes of liability on the part of the United States, there shall be a presumption that the price paid at a sale under subsection (a) is the fair market value of the property or portion.