1990 Nova Partial Shelf

I have a Nova Hatch Back Parcel shelf (in grey) with no holes for speakers cut in it, and I am looking to sell this.

Any ideas how much this may be worth, or if anyone is looking for one.

Dave C
(Hull East Yorkshire)

My guess is it's a parcel shelf.

Colour ?
A brown one is probably most valuable one rather than a grey one I would say.