These are the one in a hundred.Tyrone, one investor may look at a property and determine that it is not a good deal because it does not fit into their particular investment strategy (flip/rehab/buy and hold etc) For example, some investors may want properties that need extensive work as long as they can buy at a deep discount and flip for a profit and other investors may buy turnkey properties that will cash flow for long-term buy and hold.  

Obviously, they would probably at least try to offer more support for a new agent than the discount places.

A main question I have is can quads usually be found in C - B+ areas at a discounted price?

I'll get a deed because I think I can negotiate a discount, or keeping the payment current will cash flow or the payoff makes sense.  

And second - for whole portfolio he should offer very good discount.

In 2015, banks are getting market value and have very little motivation to deeply discount their REOs.You really don't want houses AFTER foreclosure (that's the problem you've seen here).  

Don't build the fence and risk losing the historic home property discount.

I personally like to make three offers...1 - cash with a major discount2 - seller financed with a big down payment and a reasonable discount.3 - seller financing or taking over the note with nothing down, with a small discount (possibly none at all if it will cash-flow).If they want option 1 - the discount is large enough that securing private money will not be a problem.

I won a bid on a property on HUD at 69% discount at $70k, the Market value is $110k, and MLS has it for $105k the property needs about $5k in rehab just light work.

That is longer than you said, but they also have a trading exchange where you can buy out someone's portion at a discount/premium