I think adding undue cost holds weight even though we live in a society currently where people are expecting compensation for their materials and time. One is making it more expensive specifically because “the poors shouldn’t have guns,” one is how much a physical item is sold for. In a post scarcity society where everything is always free; sure I agree, that argument would be silly. But this ain’t that, we ain’t never had that, and I’m 99% sure we never will have that.