Not a single person has written an accurate how to on wholesaling.Anyone ever read a wholesaling how to that said "Tell the seller you are wholesaling the property"?

Gamble and play the odds in Vegas, but not in business.

I am not 100% on how accurate this service is as of yet, but it seems to be much better than CoStar in this niche.I have been cold calling MFU owners for 3 years now and Reonomy seems to be the most promising option I have found thus far.

Whatever your decision in choosing how to rent the property it is important that the lease you have the tenants sign accurately provides all of the terms you wish to have. 

Let me give you some current, and accurate info. 

Now they have to track/verify volunteer hours, adjust rents accordingly, make sure all rent logs are also accurate so there's no discrepancies, etc.

If you haven't you should probably do that to get a more accurate grasp of costs in your market.  

We got lucky (ugly house in the perfect neighborhood) and took a big gamble on a courthouse steps auction. 

how accurate is the rehab cost?

He provides the following:4 studio apartments @ $1,000 per month4 one-bedroom apartments @ $1,250 per month4 two-bedroom apartments @ $1,500 per month4 two-bedroom apartments @ $1,800 per monthProperty taxes, $40,000 per yearInsurance, $15,000 per yearWater and sewer, $12,500 per yearElectricity for common area lighting, $2,800 per year"You confirm the rents by examining the leases and you verify independently that the expenses are accurate as quoted."