I tried it and it worked okay - about as well as Calibre and was able to convert one (non-DRMed) PDF that gave me an error in Calibre. So my conclusion is that it's worth it for free.

The free offer is indeed good for the month of Feb so even if this guy is a spammer, I benefitted from his message. I had already downloaded the trial version previous to seeing his post but that only converted 3 pages, hardly good enough for an evaluation!
I don't like reading PDFs on my jetBook Lite so prefer to convert to RTF (or Word), edit out the junky stuff and re-save.