There results are very accurate, but of course people change their email addresses and phone numbers. 

If I give you money, what is to stop you from taking off and living the good life in the Bahamas or gambling it away at your favorite casino? 

They are a marketing platform and their data is not very accurate.

If those numbers are accurate that's a great deal.

Understand how to analyze deals, how to calculate ARVs accurately, how to manage contractors, etc..

It costs more up front because the home will have to be appraised again later but this is the most accurate way to know the ARV in my opinion.

I don't want to waste their time because I know that typically there is a small percentage chance on the deal actually working out, but I don't know how else to accurately estimate renovation costs.I have looked at the rehab estimator tool on BP and try to ballpark it but ultimately I know that I will not know everything, and wouldn't want to botch my first deal off of not accurately planning for reno costs.Would appreciate any input - thanks!

Typically the main things you can lose profit on has to do with underestimating the cost of renovation; unforeseen things that arise; holding costs; or not accurately understand the market. 

I have heard about areas like Beacon Hill, Strawberry Hill, and etc, but I don't know if that is accurate. 

This is definitely worth trying if there are more accurate/higher comps in the area that your appraiser didn’t factor in.