@Brad OttThe normal pricing for the pro level nationwide access is around $275/mo plus data with a 1 year commitment. 

I've never once asked for tax returns from a seller and only been asked once by a buyer (I said no)A sellers income/expense may be very different from what you'll see, so I use what they provide as only a small data point (even if I assume it's honest).

I can't imagine how you would do this business without the type of data agents have. 

It sounds to me like that data isn't available in your area because it shouldn't drop it down that much.  

Online websites like Zillow and Redfin have changed the marketplace in the last few years and allow public access to a lot of the MLS data. 

We are working with a widow and currently gathering data.

Spot the pattern, and hand that data to the appraiser.

You have knowledge and experience I simply won't have for a while.You probably already have, but I recommend checking out the data on Airdna regarding performance of current full-time Airbnb's around your place.

Here are some suggestions:For population, GDP, employment and housing stats, use the Bureau of Labor Statistics: https://www.bls.gov/home.htmYou can navigate using Search or using the Subjects and Data Tools categories near the top.The easiest way is probably to just google 'bureau of labor statistics' and the name of the market you're looking at and the specific metric you want.

I can’t keep track of trends or spending if I do not have the data.