the house has a bunch of equity, being worth about 750k when fixed up.I  know that on a standard convenetional mortagage foreclosure, there usually additional fees such as unpaid interest, attorney fees etc, apart of the princiapl balance.Is there a way to conservatively assess what will be the actuall "Pay-off" on the 1st?

I would offer 90% of the market value. if he sells it you with no agents he is saving 6%~ on real estate agent commission and the other 4% is a convenience fee in that he dos not have to endure showings etc. and you will get better pricing on a non-owner occupied property if you put down 25% is compared to 20%.  

She apologized but did not rebate any of the fees which when I require a second visit I get charged (and she did charge me for a second visit because some railings were down at the powder coat on her first visit). 

I receive rents totaling $1817 per month, after property management fees of 8% are deducted.

If you're buying a place turnkey you're unlikely to be able cash flow positive or even break even, especially if you're paying a manager (although management fees are the lowest in the country here due to all of the competition). 

While the market appears promising, it does seem to come with higher prices, rising HOA fees, and increased competition.

Because a large percentage of the charges are base fees that do not change based on use!

Now i send this property to my buyers list with verbiage of "realtors stack your fee on top".

This reassures potential guests that you care about service quality without engaging in a back-and-forth.Address Any Legitimate Issues: If there’s any valid criticism hidden in the hyperbole, acknowledge it briefly.

South Carolina imposes a deed recording fee of $1.85 per $500 regardless of county.