Section 8 rental property

[Lian Shi]

Hi group, 

     I saw a deal in my REIClub mailing listing, the asking price is 16.5K, needs some work, mostly clean up and comestic. Section 8 rental is $1245-$1500. It's a few minutes away from Baltimore Downtown. 

    I have been seachimg how Section 8 works, and just don't understand how can a house rent for that much money while the house is worth of less than 20K?

     Any knowledge is appreciated.