BiggerPockets also has a calculator to analyze deals, and I highly recommend you start this as soon as possible, even if you are not ready to buy.

Also Condos are dealing with high special assessments.

The last thing you want is to have a home run deal that theoretically should be a high-profit flip but is ruined because your contractor screws you over in some form or fashion (late deadlines, inaccurate scope of work, etc.). 

He uses poorly thought through methods, I've listened to his "methods",  Thus, he has the high amount of  Due On Sale called in a short period of time. 

Cleveland, Baltimore, Toledo, Indy etc....You will see net population decreases in most of these areas but these are the areas where the prices are the lowest in the USA and come with rents that are very high when compared to the sales price.

I have sold in California, took the cash and moved out of state (to Indiana) and highly regretted it - I didn't have a real estate investor mindset then.

Are their listings detailed with good-quality photos?

I can say in Detroit the wholesaler your talking to has most likely found that deal from 2-3 other wholesalers, they literally have to payout 2 - 3 other parties to get the deal and this is what the fees are high and the deal makes no sense.

But if this is purely an investment, the high maintenance fee is a major concern.Now, let’s look at what happens in the next 5 years:Refinance After 5 Years: Assuming 4% appreciation, your property value will increase to $1,216,653.

If the answer is "close enough," they move forward without much hesitation.While it's true that higher-quality tenants are easier to attract with nicer homes in better areas, I’ve managed C-class properties and had fantastic tenants.