Making an offer on a SFR

[quadzilla]

SFR listed at $589,000

It is also listed at as a rental at $1900 a month.

Spex made a post about making offers at 50% of market value.

Desert Cat made a post about rental analysis and I don't know wtf he is talking about. It is all in this thread;

thread

I work for my $ and am not interested in making $ from RE transactions. I just want a good deal on the next place that I buy. Doesn't the situation listed above seem odd?