Zillow & Auction.com starting bid accuracy

[Henry Cobb]

I am observing my first foreclosure auction on Tuesday.  No bidding for me!  I also have several questions on the liens of a property listed for auction by the mortgage company.  

Both zillow and auction.com list the starting bid as $330,000.  Could this be accurate considering "zestimates" and the like?  

The trustee sale document lists the Mortgagee as the one foreclosing the property. Original loan amout of $323,200. The mortgage was recorded on 8/26/2003. The county records show a mechanics lien filed on 9/6/2003 for $63,000 for the pool. There was also a lien filled from the HOA on 7/14/2013 for $1,600.

My questions are can one ask the Trustee before the auction if this starting bid is correct? Assuming this mortgage is almost 13 years old, could the $330,000 amount satisfy the remaining mortgage amount, the pool lien and the HOA lien? If not, what happens with the 2 liens when someone buys this property for the mortgage foreclosure. Meaning who is liable and how are they handled then. This is in Texas. Thank you in advance!