4.25 Euro (or $5,80) monthly. If you want, we can set up a free 2-day trial server for you, which you can either upgrade to a regular server by making a payment, or resign from it. To do that, place an order and put an URL to this post in order comments in the order form and we will set it up right away.
You can order the server here: http://www.og-servers.net/index.php?site=order
(note: you can also calculate the price for your chosen server anytime here: http://www.og-servers.net/index.php?site=calc)
In case you have any further questions, please don't hesitate to contact us directly by email, msn or IRC:
http://www.og-servers.net/index.php?site=contact