How are some properties in Bay Area being sold under $100K?

[Shawn Goh]

Hi, this is my first post. I was told by a broker that nowadays foreclosures and short sales don't provide much of the expected discounts from retail price. For places like south bay where average 3 bed 2 bath house is over $800K, I'm surprised to find over a hundred properties sold for under $100K in Zillow for San Jose, some even below $10K! How is this possible? I don't think foreclosures and short sale give that much discounts. Neither does auction bidding. Are these non arms length transactions, selling to siblings and cousins or questionable deals? I doubt as they will be called out. Someone please enlighten me, for someone looking for something affordable to own. 

thanks in advance!

Shawn