Is it wise to buy advertised properties from a property manager?

[David Smith]

A broker/property manager sent me a list of properties with cash flow information for each unit. They seem overpriced (one they had bought for 6k, rehabbed slightly, and selling me for 44k. However, these units seem to offer good cash flow. Any red flags?

[Aaron K.]

Do your own numbers, what the last person paid for a property is irrelevant so I wouldn't pay too much attention there.  It could have been bought for $6k because it was mostly burned down for all you know.  I'd be skeptical but run my own numbers to see if they were worth buying.  Only thing I might accept from them is if they currently have a tenant in place with a set rental amount that can be documented.