Realtor DOT Com Duplexs with unit rents listed: For REAL?

[Nrbq Nkotb]

Hey all.
I'm new to this site.
Trying to get over 10 posts to allow all those special privelages.

HERE IS A QUESTION:

I have been browsing realtor DOT com (don't have ten posts, doh) and looking at duplexs in my local market ...

I see quite a few (like 2 or 3 pages) of them in the, how should i say, lesser sections of town below the $150,000 level (my current looking range) ... and they will be listed with the "unit 1 rents for: $X" , "unit 2 is renting for $X" ...

in todays market (or in general) is it really this common for people to be selling what appear on the surface to be GREAT deals WITH tenants?

I know i need to call and verify, but then i wouldn't have a post, and i couldn't get past 10 posts.

So.
I keep seeing these places,
and they would be, downpayment depending, about $450 to $580 a month in mortgage payments, but the units claim to be renting for about $300 to $450 a piece.

That means a lot of them claim to be pulling in 200% of mortgage payment.

I can't believe this.

How common is it these days for people to just be ditching rented units?

And,yes, i will call.
lol.