Is my ROI on my duplex good?

[Douglas Gratz]

Hello friends!

I need some help. I don't know how to know 1. If my ROI is good and 2. For research how do you use the average cap rate to determine the price you should pay.

For the first question about ROi- I'm all in on a triplex that after all expenses cash flows $1400. I bought the place for 125 and put 15k into it for a total of 140k and and ROI 1400(12)/140,000= 12%

Is 12% good. Also my properties are in norristown Pa