I forgot that. Yes, a lot of the repos have been trashed by the departing homeowners. It is sad that the attitude exists, but yes, it is a very real caveat for an auction house.
In addition, some who have bought auction houses intending to live in them (rather than flip them), have been harassed by the dispossessed previous owners, so to the point of being in fear for their lives.
Even though I am considering it myself (only a little), I recommend against looking at auction houses, despite their apparent bargains.