There are many under 30k even now but they look horrible. The lowest priced house I saw was 5K but it was in worse shape than my old woodshed.
I saw a condo on the water for 33K that had nice views and looked decent. It seemed secure at least on the inside. It is too bad that the city is in the current state it is in. Probably many more American cities will look like Detroit 30 years from now.