Realtors often claim they're restricted to Realtor use, but that is incorrect. 

Sorry my math was incorrect.  

And no, the purchaser would not have a viable claim over the incorrect record as all information concerning the subject property must be independently verified.Owner should have accepted the pre-auction offer which turned out to be ~2x the high bid.

Your statement is wildly incorrect.

We’re willing to pay “market price” because the market is valuing the property incorrectly, i.e., too low.  

His own email is spelled incorrectly on his website "tim@tomcruz..."

If that's not the monthly income, you are arriving at your cap rate by using incorrect expense ratios/expense figures and/or the property benefits from an extremely favorable tax abatement which skews the operating costs.

Since you didn't mention this being in your lease, it sounds like you are incorrect.

The assumptions are incorrect by a mile.I believe chance of IIR of 25% is 0 now.

Thats just incorrect if its owner occupied.