Replacement GRP A frame covers

I managed to crack and damage the GRP A frame cover on my 2011 van dead rabbit on road decided to hit the front of the a frame.

i called the local dealer to get a quote for a replacement and was told they cost hundreds and are not worth replacing and didnt give me a price,i also emailed elddis and was told to contact the local dealer!!!

I like things to be right and want to replace it so it does not look scruffy.Is there any parts supplier online that deals in damaged vans(caravan breakers) where you can get parts second hand or do you just have to get one from a dealer?

thanks