You can actually get them for even less than that and get more in rent. The cheapest way is through Tax Sales. You can buy a 3 bedroom house at a Tax Sale for low thousands of dollars and rent them out Section 8 for $800/mo or more and the US Government pays you all or a portion of the rent so it's reliable residual.

Of course it isn't that simple, sometimes the houses need a lot of work to get rent-ready and if you don't live near them you need a property manager. It's complicated and a lot of hard work but the dividends are incredible. You can also lose your shirt if you aren't careful.

I'll email you.

EDIT: Strike the email, here's a post to a blog with results from a Tax Sale in Tulsa County Oklahoma last year:

http://www.gavelhound.com/blog/Final+Results+for+the+2012+Tu...

Some of what you read in these comments below is true. Skepticism is warranted. It's hard. It's dirty. The houses do need a lot of work. The tenants don't pay sometimes, but the US Govt always does. Property managers take 10% or more of the rent to manage the properties. It's a BIG risk but BIG returns can be had as well. Plus, it does take time and emotional stamina. Imagine buying a house that was a meth lab. It happens. Imagine removing the person who lives in it and they burn it down. It happens.