Best way to get to Culinarian to 50 being cost efficient

[AttacKat]

was wondering if anyone can give me some tips thats cheaper

Find the cheapest 99 stack material available on the MB from which you can use to craft anything out of.

IE:
22: Pixie Plums -> Dried Prunes
29: Milloncorn -> Cornmeal
31: Noble Grapes -> Dark vinegar

That, or start doing repeatable leavs and turn in the items for more exp.