Have actual cost saving numbers been published? I remember reading estimates back in 2016 or so of ~60% but I'd be interested in what the real numbers were
Gwynne Shotwell once noted that even the very first refurbished booster cost less than 50 % of a new one to refurbish. They've learned a lot since then and Block V is designed to do at least 10 launches I think without refurbishment (this one has been taken apart, though, since it's the very first one that launched).