SpaceX has built part of their business around the idea that it's worth trading a moderate amount of payload for re-usability as long as they can still reach th

SpaceX has built part of their business around the idea that it's worth trading a moderate amount of payload for re-usability as long as they can still reach the orbit their customers care about and it was considered an extremely risky bet before they made it routine. It doesn't make fuel cheap, let alone very cheap. Actually another significant part of SpaceX business is modern engineering and modern mean of production. They used to launch without recoverability for some high orbit payloads and they were competitively priced for that too.