I was hesitant to pay 20 bucks for a prgram that I had no knowledge of when i first started boxing as well. It wasn't the money it was the, "do I trust this vendor I've never heard of" factor that had me hung-up for a while. I looked around and found so many people using it that I finally threw in the CC number and got the full version. I would definately say it was worth it, nice program and good support even through the verification server hiccups.
I eventually switched to HKN because I like to mess with the scripts, but thats my sick addiction, and had nothing to do with the caliber of Rob or his software. I haven't upgraded to the newest version of keyclone but from what I hear it has been steadily getting better, and more worth every cent you spend on it.