An auction is telling you key insights regarding your wealth, finances, spending, personal resources, and physical circumstances. You are either overvaluing or undervaluing a certain part of yourself, and this will be revealed to you in the dream.
The items being bidded on and your willingness, or unwillingness, to spend and “bid” further determines key dream themes and messages. For example, you may dream of being happy to spend thousands to millions on an ancient artifact, key piece or wisdom, or even a bowl of vegetables. You could equally dream of not wishing to bid on any of these things.
If there is a person you know who attends an auction, this signifies an ending or a new beginning. Romantic and love relationships can be represented through an auction. An ex-lover, for instance, may want to rekindle the flame, or desire to leave your life for good.