An auction unit is a set of items that are sold together in an auction. The term 'auction unit' can refer to the LOT, which is the group of items being sold, the ITEM, which is the individual ITEM within the LOT, the BID, which is the offer made by a potential buyer, the eer, which is the person who is selling the ITEM, eBay, which is an online auction platform, NOD, which is an indication of agreement, and BIDS, which are offers made by potential buyers.