How can I get a fairly accurate value on property?

[Ali Chami]

I have purchased a number of REOs at very good prices (no appraisal was ever needed because they were all cash deals). I have rehabbed them and rented them out. How can I get a fairly accurate value on each? Is it even possible? I used some of the links on this forum to get values and if these are correct, then I'm a very happy man. I spoke to different realtors and their numbers were all over the board. Should I even spend the money for appraisals?

Thanks