This is NOT sub-to.

Did ask about specifics they are interested in and after 8 hrs of no response I reported it as spam.

I would also recommend getting a few more bids from reputable foundation companies to ensure you are getting the best quote.

You're talking about putting 50% down and then a 6.5% interest rate? 

Quote from @Brandon Croucier: That’s a killer loan if they are actually offering that.Seems extremely below market value as even primary mortgages are higher than this right now.I would beware of a bait & switch on this. 

Understand Your Financing OptionsTraditional Bank Loans: Requires good credit and a solid down payment (usually 25%).Hard Money Loans: Short-term, higher interest rates, but easier to qualify for.Private Money Loans: Funding from friends, family, or private investors.FHA Loans: Low down payment options if you plan to live in the property.Seller Financing: The seller acts as the lender, offering flexible terms.2.

I'd also possibly be interested in buying it.

He's selling real estate education, from the looks of his website.  

You can easily do this on a spreadsheet and it will take less time to track than it would to find and learn a new software.

I have also read that most mortgages or liens get wiped away from a tax deed sale, except those that are through the municipality or county, is that true?