Adding to previous comment, looks like the cost per launch when the system was up and running was ~1billion USD inflation adjusted. I'm going to assume Starship will beat that easily.
Nobody but SpaceX knows how much each Starship test costs but the estimates online range from $50 million to $200 million. Presumably, whatever the actual cost, they're more expensive right now while they're redesigning bits and doing custom, one-off work for each flight but it has a long way to go to beat Saturn V for the full mission.
I guess you could argue that it's never meaningful to compare anything that isn't a commodity though, which certainly isn't the case here. But I find that silly.