Those who are experiencing some difficulty that makes them willing to exchange more money for the convenience of a quick sale.

Tax sales are a balancing act among (1) the need of government to collect property taxes and, if owners will not pay then, then to provide incentives for investors to purchase the tax rights and (2) investors, who need an attractive return for the risk they are taking, and (3) citizen taxpayers, who should not lose their property and all equity because of small debts and perhaps temporary or at least relatively short term financial difficulties.

The only difficulty is I’m trying to find a multifamily property in an older housing stock area but nonetheless an owners unit inside a larger house is the goal but hopefully I can get lucky with the items you pointed out as well. 

i come from the old school where equity was king and now am having some difficulty borrowing on an investment single family home with fifty percent down because of our debt to income ratio...i always worked to avoid paying taxes...

One of my tenants is in her upper 60's, she works for a temp agency and has difficulty paying her bills.  

It's run on an agreement between two parties and if those two parties have difficulty agreeing then negotiation begins.

How difficult is it to get a STR permit?

Savannah's STR rules are really difficult, I invest a lot there.

Annual registrations, point of sale inspections, turning a blind eye to the most awful owner occupied housing while being overly strict to investment properties, courts that continue to drag out the eviction process; excruciatingly slow, laborious, and expensive permit processes; evictions that continue to be granted one extension after the next... these are the difficulties you run into in those cities. 

Quote from @Jacob Sherman: want to be at 65% ARV to stay solid I’m having difficulty finding the ARV in Ohio, areas like Cleveland, Dayton have prices all over the place.