I don't care if it costs a trillion dollars for everyone who wants to cast their vote to be able to do so. I'd imagine most people who believe in democracy feel the same way.
It doesn't even really cost that much in the grand scheme of it all, is the preposterous thing. The idea that any state saves a meaningful amount of money by just restricting voting access (let me repeat that for dramatic effect:
we are discussing restricting voting access just to save cash) is the same logic that says we can balance budgets by tackling "fraud" or taking pennies from Head Start and public broadcasting.