Triplex is it worth it? Numbers sound to good to be true?

[Yousef Reda]

expenses 2096 
repairs 225
vacancy 315
Property management 450
Rental Income stated by seller to be 4500$/month for all units
Cash flow 1414/month 
ROI 96%(As I'm only putting 17500 of my own money for a price value of 350,000)

Its walking distance to a university and will be an out of province investment for me. The seller seems to have multiple units available but the numbers seem to good to be true?