If so, is there any systematic way to find these markets besides word-of-mouth?

If you have a track record of success this may be alittle easier moving forward but lenders like to see your money in the deal, and the more of it the happier they are.

He should have kept his mouth shut on that since he had no clue the going rate for that type of roof. 

Many have gone like the wind, new ones pop up and will also disappear with the next breeze.Selling crap properties, in crap areas for more than they are worth and then passing on to 3rd party PM that nickel and dimes to death.It's a shame but it's been the same cycle since I started in 2012 and even longer that I remember.I feel sorry for such investors that commit so these providers but I feel even sorrier for those that try DIY BRRR from out of state.Asset classes are variable and "Potato" "Potato" lolFor example, I can almost but guarantee that my B class in Toledo for $90,000 for example is D class in Cinci.Lived in Middletown and owned a few rentals in Cinci so know the market decently.It also comes down to how someone was born and bread.I had investors come from Cali and laugh at me and my "B class" properties.They said it's Z class.Even tho my entire team lives in the area and so did I for 10+ years.No silver spoon in my mouth growing up and I wouldn't sacrifice my families safety in a so called "Z class" area.But we are all different, right?

That way you can hear it directly from the horse's mouth what the major differences would be.

The money they cost me will forever leave a bad taste in my mouth, unless they reimburse me for it, which I don't see ever happening but its a lesson learned. 

You will get some people by word of mouth if you send something out to your other tenants.

I said no then called Sack and he no longer pick up the phone.This whole thing leaves a bad taste in my mouth.

I think, so can't advertise anywhere, or would be called "conditioning the market", and has only grown by word of mouth, friends, families, relatives etc.

That way you will be getting the information straight from the horses mouth.