Even the most inept landlords typically do not let the tenants stay without paying rent since 2012. 

Typically, that would be geared towards making a commission upfront on deals or flipping so you get the income now.Both great strategies, but it depends on the stage of life that you are in at this moment. 

How much does it typically cost ?

However, typically if you buy cash, that percentage tends to be lower than if you borrow.

I have a family member in Houston taking the "Daymond John and John Hopkins Success Formula". He is spending $26k. He is broke with bad credit, so I assume they financed him somehow... Not sure there.He is in it a cou...

It will give you double digit cash on cash return with typical financing and other assumptions that would be considered normal when analyzing a park. 

The commercial lenders that offer such loans typically want to see 30-40% down, 10-15% in reserves and they want to lend about $50K minimum for it to be worth their while.  

No, but it's generally considered a Corporate Advance and tacked onto the arrearages which is typically included in the final judgement amount at Foreclosure. 

Typically the types that plug into a standard 110v wall outlet are slow, and you trust that the outlet is solid.

My experience has been, these "First Time" or "Income Restricted" Loan offerings by various State and Local Agencies are all done through a Typical Lending Company (Mortgage Banker / Mortgage Lender) that has qualified with the Agency(s) offering the program.For Example, if you met the criteria for a "Texas Vet Loan", and were qualified for the program, all the processing and workup of the Loan package will be completed by Blank (Generic) Mortgage Company.