Seen this before but that's bullpoo, 3k for that, didn't even look like you damaged it!
Some good Vids in here.
Doesn't look like much, I flattened a total of 28metres of barrier (about 9m of barrier 3 beams high) and 5 upright posts were bent. Plus marshall attendance, flagging, they charge you for all of it. Then recovery was another 220 euros on top.
As harsh as it sounds, I'm a civil engineer by profession, and 3k for that much barrier to be removed and re-installed with new gear isn't a bad price at all sadly
same rules apply in england too, if you crash on the road you're charged for the barriers, difference is, your UK insurance deals with it all so you never even know about it.