Pretend I’m an idiot.

Oregon is 125 for a roller and 75 for a flat tappet. But then you have the expense of custom pushrods.
The expense of shipping the cam to be re ground to and fro......
The additional expense of tappets, pushrods, etc.. all part of the game.

IMO, I would not have the cam reground but I would just get a new one.