The 2D/3D price per second is a trap as far as I'm concerned - if you say, or example, 100 Euros per running second finished 3D, you may well run into a situation in which you have to do a lot of prep work to get the logo looking good (conversion from .eps file, texturing multiple colors, converting a bad .psd to 3D, etc.). While you can structure your price to take these into consideration, many times you will end up on the high end, and lose bids.
I think that the price per hour gives both you and the client an advantage. Of course, you always want to look at what the client has before you quote on it, but if it's a simple logo which won't require too much work, you can keep your quote low, and still make money. As far as production prices in Germany, I have absolutely no idea what the going rates are, but of course, as with anywhere, you'll find different rates depending on the market (don't expect to get Munich rates in Lubeck). I think the best thing to do is to find out what your competition in the same market is charging (by checking out websites), and putting your price somewhere in the middle - and of course, since you're new to the market, you may want to do a few low profit projects to get your name and reputation out there. Good luck!