Hey guys,
im a bit confused now how the prices in different countys are made

i opened the site with my normal Chrome browser and then with the tor browser with some random ip
and get different prices for the age of wonder deluxe pack

That's because TOR can use the IP of other countries and some of the games on GOG have prices that differ depending on your location.

First, the sale page is sometimes a bit buggy, so go to the checkout page to see the real price you will be paying :-)
And also Age of Wonders 3 is one of the regionally priced games, for a complete list of regionally priced games see here:
http://www.gog.com/forum/general/regional_priced_games_on_gog

It's regional pricing. $19.29 is the price for most European countries while $15.29 should be the US price. No idea why one of your two browsers assumes that you are in Europe.

Do I get any problems if i buy the game over a other ip with a cheaper price?

Nothing is guaranteed and it is discouraged by GOG. Proceed at your own risk.

Quote from the gog user agreement:

It would be a better solution if you know someone in another country. In Russia for example its only $ 4.99 for this game. On the other hand is this worth an account bann? ^^

Which is not in effect yet though. ;-)

Yeah I know, but still that should be the right way to go ;-)

The right way for you is to go to bed now! :-)

If you keep this up, I'll have to resort to other means. ;-)

*slowly brings out rubber hammer*

yeah... you and Sinstar should definately be at the same "party" later...

Maybe it's not cool, but I think GOG cannot do anything if you try - technically, you could travel to a different country physically, log into your GOG account and buy the game for a cheaper price. Just make sure you find a place with secure Internet connection (public hotspot is a bad idea).