From the purchasing perspective you'll likely be dealing with a mom & pop vs a more sophisticated seller.

I've actually met some pretty sophisticated investors at some of those things.

You can agree to pay $X a month as a salary and set the agreement so that the agent is only to earn $X, if and when they earn any commission, then that amount is deducted from your payroll obligation, saving you that amount instead of paying it out.2.

The algorythms used by the credit companies are very sophisticated and sometimes make no sense at all..and are not easy to predict.

If you want to invest, meaning you want to be hands off, then either buy an apartment building which is large enough to support management and pay roll, or if you can't pull that off, put money into a syndicate, though even that will set you back $50,000 if you go with anything I do for instance.  

The are not the most sophisticated Real Estate Investor who deals with 32 or 50 or 100 units.

You are dealing with a more sophisticated owner.Since they've gone to the expense and inconvenience of estate planning, what is it that you have to offer that a quaiified end user or licensed broker/agent would not be the preferred route to liquidation?

In my experience, there are 2 types of investor who dominate the space:Type 1: Well financed speciality hedge funds with low cost of capital: These sophisticated investors have teams of experts who focus on knowing everything they can know about each lien and have the funds to be able to bid the price down to zero or even pay a premium to get a lien.

Investors in these deals are completely passive by definition and thus that is what sophisticated equity is worth.

Non-recourse financing is far more advanced than any other financing mode discussed here, if fairly underwritten and usually not appropriate to small seller financed transactions unless accomplished by sophisticated investors