Commercial information is already on the web site, probably you missed that tiny "here" in the wall of text of the licensing page
License details, prices and all are here in PDF format: http://www.chibios.org/dokuwiki/doku.ph ... :documents
About the commercial free license, it is there to remove any obstacle to adoption, it is mutual advertising, I usually put the best registered users here: http://www.chibios.org/dokuwiki/doku.ph ... sers:start
Once you are registered I will add your product too, I want that list to grow
Please let me know if you need more info.
The SMTP problem is real... this is why registrations have stopped for a while... thanks for finding.
Giovanni