[inquisitor]

Originally Posted by Lucy

So Tchibo seems best for internet. I saw on the website that there could be a two week delay getting the usb stick. Is that only for internet sales? Will I have a problem in shops? Or should I order via the internet now to make sure it arrives at a German address in time?

The availability shown on Tchibo's website refers to their stock for the online shop. The stick could still be available at local shops, as it is the case here in my town. So you can either order it online in advance or call some shop and ask them to reserve one or ask some German to pick one up.
Where in Germany are you actually going to stay?

Re mobile phones, i read that the eplus network Alditalk uses is bad, clogged. So that Fonic would be better.

Those congestions on the eplus network mostly affect data usage (low speed). Voice calls usually work fine on the eplus network, as long as you use eplus' GSM-network. So if you have a 3G-phone like the T-Mobile G1, you should better switch network mode to GSM/2G-only, since congestion on the 3G-network results in unavailability despite your phone showing full reception bars. Switching to GSM/2G-only, by the way, would also prolong battery life. In general 3G is only relevant if you want high data rates.
But as mentioned, voice calling and SMS isn't an issue on the eplus GSM-network.

Is there some chart that compares what the mobile companies charge for roaming inside Europe? For example, if i go to France for a few days, what will it cost me to make local calls? To call Germany?

Roaming tariffs are equal for almost all providers, as they all charge the maximum, which European roaming regulations allow. That means € 0,22/min for incoming calls and € 0,51/min for outgoing calls within the EU to the EU. If you call a destination outside the EU while roaming expect to be ripped off with prices above € 1/min.
The only siginificant exception with roaming tariffs is solomo pro, who charge only € 0,10/min for incoming calls in the whole European Union and outgoing calls abroad are also cheaper, at least when activating the callback option. If you go to France e.g. with solomo pro you could call Germany for € 0,29/min (fixed lines) or € 0,49/min (mobile phones) and the US from France for € 0,29/min. For a further tariff details of solomo pro go to https://www.solomo.de/?function=showTariffFC
If you are planning to go to other Europen countries solomo pro if the first choice.

I see Fonic charges
o 9 cents per minute for calls to landline numbers in Europe, the USA and Canada.
o 29 cents per minute for calls to mobile numbers in Europe, the USA and Canada

But what about FROM France to French numbers?

That would cost € 0,51/min as stated above.

I see that there are quite a few German discount carriers that sell plans where the sim cost is free or equals the minutes included. Can't find that in France. (Orange costs 30 EUR for a sim!) Or am I looking in the wrong place?

French SIMs are cheap to get from French eBay.
As you might be interested in cheap international rates from France, check this thread - it's primarily about cheap rates from France to Germany, but I presume those providers have similiarly cheap rates to the US.