How much does it cost to get the non-trial version of Fax2pdf?
This application isn't available for purchasing anymore. I've searched on the official website and the developer has only 2 products that are still into Fax operations, but they're not converters anymore.
If you want to take a look at products, visit the following website: http://www.joyfax.com/download.html
Additionally, you can choose other applications through the result list: http://software.informer.com/search/fax+to+pdf