How much does in your country internet costs (in €)
Well, I don't know what '€' is, but here in Australia, 56K unlimited costs probably around $25.
Broadband costs craploads more. For cable, it's about $70 or more per month for only like 3GB downloads. For ADSL it's even more, about $90 or more for about 3GB to 6GB.

They are with the ISP's I know, there are probably others, but prices are about the same.
To get the approx US price, just half the Australian price.

Greg