Looks very nice. However, even though it would cost a lot to reproduce that rifle, I am not convinced that the market will bear $30K for a single shot. Half of that, yes.

As for weight, I had a .600 NE that weighed in a 14.75 pounds. It was still like being in a car accident every time I pulled the trigger. But carrying it from the car to the bench at the shooting range almost gave me a heart attack, so I don't know what the solution is.