I don't think that its' price will be more than 800 euros,because in this way it will be VERY VERY expensive!

But bear in mind that in the first few months it'll cost a lot...
After 3-4 months its price will be dropped about 70-80 euros...

The same thing happens with all top-models from SE and i don't think that X1 will be different in terms of price... ;)