By those comments, Luke is more spoiled than Leia. He whine’s about the Falcon too, + a lot of other stuff if you’ve noticed, makes not so nice comments to Han etc. And he didn’t have crap in the desert.
Luke was complaining because of the obvious rip-off price. That gives someone a good ground for complaint. And the fact that he “didn’t have crap in the desert” makes the complaints even more warranted. On the other hand, Leia’s complaints had no real ground.