Ok, let's get a bit more serious now.
There are 2 kind of games on GOG. Regionally priced one (like D:OS) and Local currency ones (like Divine Divinity). The Local currency ones use a fixed conversion rate to your local currency. Whether you pay in $USD or €EUR the price difference should be in the cents. With today's conversion rate, the euro price for a $9.99 game is €0.07 more expensive. With the prices GOG used on the 18th, the €EUR price was €0.24 cheaper (exchange rates from
here).
Regionally priced ones now.
Yes, it sucks when the price conversion isn't in your favour. However, we did run the numbers for regionally priced games (
this post) and even after the correction of my math errors (
this post), the difference is still in the cents, assuming you keep buying games on GOG. With this announcement, if you don't buy more games GOG, the regionally priced games are in fact cheaper than they were before.
So, feel free to continue claiming that the games were made more expensive. The regionally priced ones were made cheaper, the local currency ones are still priced the same. At least according to those who pay in $USD.
P.S. Feel free to correct my math, I'm not infallible (or in the words of Λαίδη Άντζελα, "Κανείς δεν είναι άσφαλτος") ;)