Do you know how to read the credit/criminal background?

I would suggest starting with reading the IRC book all the way through multiple times.

@Raghu GotHave you read any of the comments in this chain?

Then you can read a more in-depth book like The Book On Rental Property Investing by Brandon Turner or The Unofficial Guide to Real Estate Investing by Spencer Strauss.2.

Are you open to properties that need a lot of rehab work?

If the county is just posting the minimum bids and that is what you are seeing, they'll likely sell for a lot more than minimum. 

For example, I have a private lender that gives me 8-9% on the rate for rehab costs when I am usually getting about 10.25-11.25% on the rehab costs from hard money lenders, and the HML is not sending the full money upfront, but in draws (this is normal for most HML) which is a lot more cumbersome. 

Read "Set for Life" by Scott Trench or "The House Hack Strategy" by Craig Curelop.

You are correct that there is a lot of variability in prices.  

It's more feasible than you think.