26 unit multifamily question

[Chris Wood]

I recently looked in to a 26 family multi unit (it was an 18 unit plus 2-fourplexs). My question goes out to the experienced people. I ran the numbers about 6 or more different ways and ultimately in my best case situation came out with 1600 cash flow.  Is that good? I used the bigger pockets analyzer (which I got to say is worth every penny for PRO status!). But when I analyze a duplex I have and use pretty much the same set up and I come up with a almost a 475 cash flow each month, I question why some would want to go that big for such little money. If you have some insight that would be very helpful. Thank you!