[Perlfect-search] Index Size?

[nate@student.umass.edu]

I have browsed through the archives and can't find any posts about the actual 
size of the index will be with x number or pages and/or the size of the site. 
So does anyone have an estimate on how big the actual index will be after 
indexing our site of ~900 files using 21 megs of disk space? I just need a 
rough estimate to satisfy the cgi admins who say they are low on disk space. ;)