Anyone Use Terapeak

Does anyone here use Terapeak or another eBay Product Analyzer program? I've used Terapeak's demo and am contemplating whether or not to pay the $25.00 monthly for it. I'm sure its good but I haven't gotten started into eBay yet so I don't think its any use to me right now.

Any suggestions and feedback is good.

Use the free version, it's more than Joe Average needs.