Redfin is a brokerage using an IDX feed like any other brokerage using an IDX feed straight from the MLS so it's the same data.

Since you have a punch list of cities, pull this data for each city and compare.

However, as @Walt Payne said, i'd love to see more historical data on the reliability of their protection since they are a newer structure.

Would greatly appreciate any insight or experiences you have had with data mining and statistics in your ventures.

Should you be unsuccessful at your first test attempt, you'll have to wait 30 days before you can retest. 

Assuming they didn't put $100,000 into renovations, they could still see a profit with whatever I can offer.I swear I just heard on one of the BP podcast someone was saying that you need to do the spaghetti test; keep making offers and see what sticks.

It appears to me that it is required and that it takes three years of experience after getting a real estate licence and is accompanied by a test.

I tested the outlet and it was around 119 to 120.

Once you get to a point you are totally confident in your ability to analyze ARV, you can do it yourself, unless you need to the realtor to get the sales data.

Some of this data can be found online (if the county offers this service).