We are mostly past the heat for this year and I hope to have this sold well before next summer, so any evidence I come up with will be largely based on perception..

It is all about your perceptions. 

The public perception has been damaged and people now see RE as a financial risk rather than a savings plan or investment.

Real estate is 90% prospecting.My niche is development and building if that helps broaden your perception about what I do.

I came away with the perception that one should be prepared to have up to 40% available for down and closing.

Its the siren's call.  

If the assumption is that the increased minority population is being fueled by those in lower socio-economic groups (I don't have data to support this off-hand, but it's the common perception), then think the answer to your question will be highly dependent on the social changes (if any) that occur over the next 20 years or so.

Rather it's an indicator of market sentiment and more specifically investor's perception of the risk/reward.

or anyone here can explain them to me Hey Rod,I write a blog for Bigger Pockets a while back about my perception on the different types of asset classes.Please see link - http://www.biggerpockets.com/renewsblog/2014/06/28/abcs-real-estate-asset-classes/Thanks and I hope you find it useful.

I'd say common sense prevails, a hundred bucks may not set off sirens, a thousand could very well, I'd say it must be significant to the value of the transaction.