Not only do you have to put up with the dreaded "dealer tax" (i.e. self employment tax), but the capitalization rules pertaining to overhead costs is also a tremendous burden.Consider this: You purchase a home for $30,000 cash.

And a good trial lawyer will do everything humanly possible to make sure you go broke if you don't settle. 

You are dealing with adult human beings, not children or dogs.

Your screening process must not violate human rights legislation (Fair Housing Act I believe in your jurisdiction) and should be relatively transparent (read: defensible).  

For the cheaper house, I got the dining chairs from the Habitat for Humanity Restore and they are much better: no cushions, no crossbars to break, etc.

Habitat for Humanities ReStores sometimes has inventory, but they are hit or miss.

Everybody knows "The Oracle of Omaha," and Warren Buffett LOST $49.7 BILLION DOLLARS in the first quarter this year...The Market is 80% traded by ROBOTS, not Human Beings.

Human nature sneaks in.

Also...this thing is so poorly made that I see the dealer every other month (seems that way!).

Many folks once they bought at Auction will as soon as humanly possible have their PML or HML refinance and pull their cash out so they have to buy insurance then..