Refining a part max will cost 800-1.1b. Which is nothing. Farm untill u got 5b make investments, quick buy sale. play the market. Earning zulies in rose has never been dificult. U can get plenty of body reduction gems a day if u know how to, which currently sell at 4b. So how is refining to 15 hard again?
You can Try 8 Grade item refine youself lmao i tried 8 grade item until +15
yes it wasnt hard. i tried myself 4parts of crafted item. but i needed almost 999 x 4 lisent U, Venurune 400-450, Plutorune(nepturune) almost 70-80
its impossible unless you buy already existing gear on market