PDF Software: Alternatives to Adobe Acrobat

Check out this product (PDF Converter 3). It creates PDFs just like Acrobat but costs only $99.
http://www.nuance.com/pdfconverter/professional/

I'm wondering if there is a catch...

Here's an endorsement of sorts:
http://www.nuance.com/news/pressreleases/2005/20050527_pdfcodie.asp

Here is a general article that calls Adobe Acrobat a "Cadillac" and PDF Converter 3 a "Ford". Given the repair records of both makes, I'm not sure this is the most helpful analogy:
An Embarrassment of Riches: How To Choose a PDF Creation Tool
http://www.pdfzone.com/article2/0,1895,1948642,00.asp

Here are two more resources for PDF creation. Both sound promising and very inexpensive. (One is free.) I have not tried either one.

http://sourceforge.net/projects/pdfcreator [a free download]

http://www.docudesk.com/deskPDF_Main.asp