Hello
The .pro register, registryPro have launched a special promotion - "50% off promotion!". OVH has applied this saving directly to you. You can get a .pro today for €4.99.
To register a .pro domain you must be a professional. To validate your .pro domain names you will be asked to complete a .pro registry form (make sure to put your correct company registration number, registration date, etc ...)
Find out more here:
http://www.ovh.nl/domains/dotpro.xml
Regards
Octave