I ran the numbers on a property I am considering as a rental.

I ran across one of their ads and it says interest free loans for flipping for up to 12 months.

I didn't ask about seller finance so glad for the reminder that might be a possibility in some cases.Anyway, after I ran the numbers using an APOD form and the calculator here, its not worth it at the current asking price.  

But after I ran the numbers, it was not so good.  

I wonder if that's more of a regional business culture.

, but i ran the numbers and after that it didn't look so appealing, and if you were to factor in capital gains and other fun government taxes, well, i don't think it's a good option, and there are for sure better ways to exit.The numbers play out like this (not considering taxes, capital gains, and other factors, i was just trying to play around with the idea and keep it simple for the start):Your NOI: ($119,160 + $30,000)  - $70,000 = $79,160 or $2638.67 per year for 30 years and $219.89 per month for 30 years when you factor in the 30% down into it ($137 per month for 30 years)Cap Rate: 2633/70,000 = 3.76% per year for 30 yearsCash flow: $331 per month for 30 years but only $137 of that would be profitROI: 2.33% without the 30% down factored into it (3.76% with the 30% down factored into the calculation)Total ROI = $79,000/$70,000 = 112.86% over the course of 30 yearsConclusion:Well, from what i see here, the problem is the interest rate used.

Of course the broker's pro-forma will always paint a rosy picture so I ran the numbers & preliminarily it seemed like it could be a good possibility- built in some healthy reserves and were looking at a 6.5% cash ROI yr. 1. 

Are there any unique circumstances or cultural considerations/preparations to know about?

I ran into that problem when I had Seattle rentals because they simply did not have the incomes to justify the debt.

I ran into a situation I hadn't encountered before.