I'd say its fine. You've already made item crafting SIGNIFICANTLY harder than its supposed to be BTB. Don't make that Ritual Caster bonus feat even more useless than it often is by applying the nerf stick again. Will allowing the wizard to be wizardly, thus saving the party a few hundred GP, really break your game? Not at all.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.