multifamily housing in MLS

[Lee Pedrazas]

I see a ton of these in the MLS that advertise "Great cash flow" or :cash cow", but when I run a really quick analysis (mortgage payment, closing costs, 30% for expenses and vacancy, and taxes) I get either no cash flow, minimal cash flow, or a loss.. Are they talking only to people who can put 100k down, lying, not know what they are talking about or what? Is there something wrong with my rough analysis?