The TLD will be sold for 16€/$24/£12 excl. VAT as an A rate. The full Gandi price grid is available here:
.PRO domain names cannot be registered by private individuals without an accredited professional qualification. The registrant must be a qualified professional licensed by the appropriate government body.
Registrations are on a "first-come first-served" basis starting at 4pm onwards. However, you can place your order now, which will then enter the queue at 4pm.
As the registry's search interface is not yet available for us to use, please check the domain's availability first yourself, as it will prevent you from placing an invalid order.
To do so, please use the .PRO Registry's Whois search engine, which you can find in the top right corner of their homepage :
If you have pre-registered your domain during August, it should be activated today at 7 pm UTC (9 pm CEST).