Reproductions are usually made to create exact copies at a reduced price.
Graham's work has been produced by the lost-wax method of hot casting, bronze. This is an expensive process and would need to be negotiated individually, as it has to be cast in a foundry.
Cold cast bronze resin is a much cheaper method; many pieces are available as painted resins.
There is also a range of hot cast white metal (silver amalgam) pieces around 10cm tall and priced £25.
Ballerina in Bronze resin