Some of the CoC are so low (and some of the projected appreciation is also low) that I ask myself, why wouldn't I just invest in government bonds instead.

I think they charge 2k or 2,500 or something and they'll do some legwork on the tax sale and then I believe they work with title companies so that they can insure the title (maybe they underwrite the title policy or something, i don't really know how they work). 

I didn’t go with his company to set up my life insurance policy.

The provisions in the second contract govern the final close so you have to check for discrepancies that would invalidate your contract's provisions with the seller.

As a company policy, not law.

Next, I'll be pivoting into subsidized housing investment and collecting rent $ from the government as i truly do believe this is a way to boost CoC return percentages in today's market.

Either way, he knows how both city governments and the courts work.

Also there is strict no refund policy, even from your wallet.

You also will face a byzantine, corrupt, and incompetent city government. 

Its a process and a government process at that so be prepared for that.