Signed Darth Vader sculpture

[canchon09]

I have just acquired this Darth Vader signed sculpture
I was just wondering what people thought it may be worth value wise and what people think of it.

STAR WARS SIGNED SCULPTURE - Darth Vader metallic sculpture by Compulsion Gallery, standing at 32 inches tall and weighing 40 lbs, signed by Darth Vader (David Prowse). includes photographs of the signing and the original certificate of authenticity. Further includes the stick on plaque (separate, unused).

Thanks

Will