I know that it's part of a carefully considered strategy to make us use gems to finish the ever-more-difficult goals, which means I shouldn't express any support for it at all, but since I'm not going to be able to finish this set otherwise (and since I really want the shoe), I'm glad the "skip for gems" option does offer a bunch of savings, instead of equalling what it would cost to speed up every recipe for gems.
(But overall 25 servings of a 10 hour recipe is just disheartening and I should really quit.)