REO no viewings properties

[Benjamin Chang]

Hello, this is my first post. 
I've been looking around different sites and listings and find that these no viewings sold "as is" properties offer the best "discount" so to speak in terms of market value of similar properties. I was wondering if anyone here does these kind of deals and what the major risks are. (Note that many that I'm interested in are low HOA fee condos)

Thank you for your time.