Money recover after bank reposes home

[Maximiliano Rodriguez]

How much money an owner can recover if the bank take the property to an Auction? 

Some data: The value of the house "as is" is $100K the owner has a reverse mortgage for $80K. The repairs might be on a range of $50K and the ARV $140. The house is schedule for Auction next month. Let say the house is sold for $100K.

Is the owner going to recover some money? Is the bank giving back the difference to the owner or the owner needs to submit a formal claim? from 0 to 10 how feasible is the owner is going to recover some money?

Feedback will be welcome