*Develop your own 3M Talent***I live in the modern day equivalent of the wild west, all this may not apply to your market.

It's kind of like the wild west down there.

Personal Lines of Credit can vary wildly. 

Austin is wild.

Purchase price: $470,000 Cash invested: $60,000 Sale price: $440,000 This was my wild ride into the world of real estate.

CPA costs vary wildly. 

Maybe if the buyer looks for 1 year they find something but I can't go on a wild goose chase and run a business on a low return, low probability transaction.Now if someone is looking for tough property to find but 6,8 10 million in price then I will put some time in to try and find it between my other deals.

Is calculating ARV a wild guesstimate?

@Jim David Is 100% correct, the age of properties around here is the major wild card. 

I have a 3% on my personal resi but I still pay an additional 50% every month because I want it paid off in the next few years.... but no question if one is trying to scale a rental business debt comes right along with it.I was at a real estate function a few weeks back and the host had a saying " refi till you die"  I really can't get behind that... and reality is 30% or more of americans homes are paid for.. and if that number was a lot higher we would not have such wild swings when you have a down or flat market.