Are the prices for the houses listed for the Sheriff's sale what is owed yet on the property and the taxes? Do people just walk away from the house scott free?

After missing 3 months of mortgage payments, the bank forecloses and the property ends up on the Sheriff Sale list.  The prices shown on the Sheriff Sale list is the amount owed to the Bank only.  On the day of the sale the bank bids first, then anyone can outbid the bank.