Apparently, I didn't embarrass myself; the broker called me every third day for a two weeks.

I agree and he and i have said we would do a contract to protect all parties involved.

I think most turnkey providers say they only sell in quality neighborhoods but I would love to confirm this by a third party.  

I haven't slept yet, so I forgot about the other party wanting to invest in your project, but my prior content is still relevant.

Again, not common overall, but if you do find someone, do thorough and careful due diligence.Finally I never recommend completely abdicating title research to a 3rd party, even a title company.

I'm not sure why you think it's the other party's job to "bring these things up in the beginning", and I am not sure why you didn't bring it up in the beginning, if that was a condition of your bid.  

There is another possibility that a third party known to the seller may intervene contesting the contract being predatory.

All of the homes in the neighborhood are $300,000 to $500,000 and ours is the third largest one in the neighborhood at 3008 sq., on a saltwater river, waterfront community.

When both parties agree to sell the property...."

Or the foreclosing party would have cleared it before auctioning, or will clear them off before giving the title to auction