Hey @Shuvrajit Mukherjee - First off, I am not a developer, but just wanted to ask some clarifying questions to better understand what data you are searching for.It seems you want data from the Multiple Listing Service (MLS) not NAR?   

Do your due diligence upfront on the person (simple google search with their name and lawsuit or scam can weed out many - as well as a search on BP)2.

Many Cleveland investors are comfortable with cash flow between $100–$300 per door, depending on the property and location.Given that the purchase price is $123,000, it suggests the property might not be in the best neighborhood, as Cleveland’s more desirable areas typically command higher prices.

Quote from @Zach Edelman: Should be a list of Bigger Pockets recommended list of Hard Money Lenders to refer to as well/make the search a bit less overwhelming.  

Here are a few suggestions on how you can maximize the wealth of information available: Check out the blogs and podcasts, or take advantage of the search feature (magnifying glass).

I am in Madison, but set up a search in Sheboygan and Port Washington as we have some family in that area who thought could keep an eye on things and the entry prices are less (in Dane County the median MLS 4-unit sale this year is $603k with 31 sales and for Sheboygan Co. this year only saw 4 sales of 4-units noted, but a median price of $252k . 

I am searching for if there is any demand for it in the area other than searching for it on Airbnb.

You can learn to Google Search for these types of Plans.

Here is an article i found with a simple google search: about $5000 but i thought quiet title in georgia was actually higher.Tax Deed Services For Owners of Tax Deeds - Gomez & Golomb LLC

They used to be marketed with all of the other homes on the main search page, but a user had to go into the filters and specifically select the "FSBO & Other" tab.