1. Except as otherwise provided in subsection 2, no sale of personal property at private sale may be confirmed by the court unless the court is satisfied that the sum offered represents the fair market value of the property sold, nor unless the personal property has been appraised within 1 year before the time of sale. If it has not been appraised, a new appraisement must be had, as in the case of an original appraisement of personal property. This may be done at any time before the sale or confirmation thereof.
2. If the personal representative is the sole devisee or heir of the estate, or if all devisees or heirs consent in writing to sale without an appraisal, the requirement of an appraisal may be dispensed with.