Might have to do with the design of the pistol?
If it was designed from a rifle, than a r/h bolt would be very logical. All r/h smallbore match rifles have their bolt on the r/h side.
Doesnt have much to do with price; even Tau 7s had their 'bolt'universal l/h r/h.
Its a matter of dedication I think. Dedicated for match (not semi match) and dedicated designed pistol