Need a quick primer on Sheriff's sales (Hudson' Cty NJ)

[Michael Wolffs]

I've never been to a Sheriff's sale before.  But I found a property going up for auction tomorrow that I'd be interested in.  It's in Hudson County NJ.  But I figure a lot of these work in similar ways.

I know it's as-is.  I know I have to put 20% down, and have 30 days to come up with the full bid price.  But they want payment in certified check.  

To me this brings up a bit of a chicken and egg problem.  How do I know how mucn, and who to make the check out to, before the sale?  

I tried calling the sheriff's department number for this.  Of course, no one answers.  So I'm trying to randomly find someone who knows.

Any other relevant info is appreciated also.

Thanks,

Mike