Congrats on looking the tax rates up! I didn't think the point was penny-saving. It was knowing what the final price will be. I also didn't really get the GP'

Congrats on looking the tax rates up! I didn't think the point was penny-saving. It was knowing what the final price will be. I also didn't really get the GP's point that just assuming a rate of 10% is a good enough estimate, so there's also that.