I presume you are refering to the padded bit inside the front screen that goes right across the car.
There are very occassionally the odd one on EBay - but only used ones.
A NOS one would fetch close to $1,000 I should think and even a very good used one without cracks go over $500 as they all deteriorate and many people are looking for them all the time.
A company does specialise in recovering them - but you are looking at $600 and more ... plus postage both ways to get one done.
Have a look in this Thread:
http://www.opelgt.com/forums/1e-othe...sh-repair.html
Thus the 375 Euro one from Germany IS cheap - as long as it is a good one!