2004 was a different "life time" in terms of real estate and the market was flooded with foreclosures that were increasing daily. The economy was in the "crapper" and many people were struggling just to survive.
You can negotiate any way you wish....but understand that these homes that seemed to be being given away are now supported by a different RE market and economy. With this said, if you can't make an offer that is supported by comparison information you just may be wasting your time.
Just keeping it real....
but you may leave that on the hands of Realtor who specialize
in this field since he/she will give you lots of other information/facts
to consider it.