All best offers for the item according to the filter or best offer id (or both) used in the input. For the notification client usage, this response includes a single Best Offer.
All best offers for the item according to the filter or best offer id (or both) used in the input. The buyer and seller messages are returned only if the detail level is defined. Includes the buyer and seller message only if detail level ReturnAll is used. Only returned if best offers have been made.
See the Field Index to learn which calls use BestOfferArray.