Depends on where you go.
€70 at one place, €45 at another (per meter). So you need at least 3 meters, so A LOT!
I got a piece for €38 per meter, but their selection is limited.
I hear if you go to the right place at the right time you can get it for €30, but I've not seen prices this low.
As mentioned earlier in this forum- the one outlet for Riva in the US charges $50 per half yard, so like €75 per meter.