That could be physical distress such as a foundation issue found upon inspection where the seller is eager to sell and unable or unwilling to address the issue.

Do yourself a favor and walk if the seller is unwilling to drop to virtually appraised value.  

I aim at owners unwilling to sell but interested in developping.

This is not bad or good, just how they operate and as an experienced investor working with multiple PMs across several states and also self managing for years they stood out to me as unwilling to listen and always ready to explain.

Tend to only own one location, are unwilling to keep expanding, their objective was to just use up the extra land next to an existing business or house, and their kids will not come back to take over the business.

While most “salesman” I know are big spenders, they are surprisingly unwilling to take a risk on investing.  

Those that decide to owner finance tend to be those that either have a property that in its current situation can not be financed by institutional lenders or those that know that by expanding the buyers market to include buyers unable or unwilling to obtain third party financing they could sell for a 10-20% premium.subject to is a whole another story.  

It really is the only way to be sure.OK, that's unreasonable unless you're renting from a little self-managing DIY guy like me, but you should NEVER worry about asking anybody renting a property to unequivocally prove that they own it/have the right to rent it out to you.Any landlords, property managers, or agents who would take offense to this request these days and are unwilling to make every effort/go the extra mile to establish their identities are very likely not legit.In the very small eventuality that you do find someone who is for real AND takes offense at a request to prove their identity, well, you're dealing with a moron.

They all pay on time and are good tenants, but unable or unwilling to pay with a check, money order or ACH.  

Had offer accepted, which we pulled out from due to some issues identified during inspection, which the seller was unwilling to address to our satisfaction.November 14th ’18 – Central, a 1-family with ready made additional unit.