Deceptively "open source"

Reviewing some software today and saw a link for SupportPRO SupportDesk. Their site leads with the following statement

"SupportPRO SupportDesk is an open source web based Helpdesk system with integrated knowledge base application."

Looking around all I see are links for pricing, demo, order, free trial. No links for download, source, OSI, etc.

There's a live help link, lets ask. During a short discussion I am bluntly informed that open source does not mean free and that the script is not free. Evidently after purchasing the the script they deliver it unencrypted, aka the source is openly readable and modifiable hence their claim to open source.

To me this is deceptive, and their script is sold source editable, not open source in the terms many of us consider. At that, I'm on to evaluate some true open source software.