Duplex deal.. thoughts?

[Cayman Rigdon]

So I have been avidly searching for deals this week. Found one earlier which I already posted and just found another that was listed about 5 hours ago. Its a duplex listed for $32k. It's not in the best part of town, but not the worst either. Based on my knowledge, it should rent at least $615 per each unit. Property does not seem to need any major repairs. At an expense rate of 40% of monthly income, and a 20 year loan with 20% down, it would still cash flow around $542. Seems like a pretty dang good deal to me, am I missing something? 

I was thinking about trying to get it under contract for a wholesale deal. However, I would rather just charge a finders fee. For a wholesale deal, does the property have to have need a rehab? Thanks guys