I would try to qualify if the owners have considered selling or may be Interested in selling before even making an offer or bringing it up; this will likely weed out the false positives and save you time from writing offers that will never go anywhere.

The agent would only be liable if they knowingly said something false which is highly unlikely in most cases like this.

It seems someone was using his name falsely,I reached out to him and found out it was not him who contacted me.I can only hope that others will becareful and check out you are dealing with.  

and simply pay you out of their pocket, and let the guest go scot-free (which I think is absurd, but oh well)For chargebacks, you will always lose however.

Were there a lot of false positives?

When I did comparisons of builder lender to non builder lender it became obvious to me that the builder lender rates were higher or "inflated" and any "credit" appeared to be a false benefit where since the rate was inflated the credit was lost in getting their rates down.

It's absurd.

Without knowing the people or details involved here at all I will say that one thing that our industry is full of is people setting false expectations. 

Credit unions have their own proprietary guidelines for their FTHB/first time buyer programs so they can arbitrarily make up guidelines that state upon move out of a primary we wont let you use rental income to offset the PITIA (monthly mortgage payment - principal/interest/taxes/insurance/assessments - PITIA) such that a borrower will have to qualify for not only the new property in full, but also the property they're vacating or leaving from at the same time.On the west and east costs or higher cost metros in the US like los angeles, miami, seattle, Austin, or other areas this can be the kiss of death for a deal even if you make 250G's a year (20.8k a month X 50% DTI = max 10.4k mtg payment) because housing is so pricey that even most high income earners will max out at 1-2 properties if they dont strategically manage their DTI or debt to income.In the OP's scenario above @Armando Montrond I would not touch my FHA mortgage since he says its at an absurdly low rate of 2.25%.

My places are in Arizona and the highest I've seen is about $250 for month and I thought that was absurd.