Taken from the forums of another publisher, this was posted by a player who did the maths (so we don't have to)
For anyone looking at upgrading their gear to level 3 or 4 it's probably a good idea to look at this to know how much you need to invest into it
Before people jump the gun, it's been confirmed that you will be able to farm shards which make cores from spire. Also there will be event for fashion pieces.
Fashion Upgrade caculation
Fashion Cloth (395) + Fashion Core (395) = (790) Level 2 clothing
Level 2 Cloth (790) + Level 2 Cloth (790) + Good Luck Charm ( 395) = (1,975) Level 3 Cloth
Level 3 Cloth (1975) + Level 3 cloth (1975) + Good Luck Charm (395 x2) = (4,740) Level 4 Cloth
Level 4 Cloth (4740) + Level 4 cloth (4740) + Good Luck charm (395 x3) = (10,665) Level 5 Cloth
Wing Level 1 (1995) + Fashion Core (395 x 5) = (3970) Level 2 Wing
Wing Level 2 (3970) + Wing Level 2 (3970) + Good Luck Charm (395 x2) = (8,730) Wing Level 3
Wing Level 3 (8730) + Wing Level 3 (8730) + Good Luck Charm (395 x3) = (18,645) Wing Level 4
that the math if you dont like to gamble
Gamble method i only buy 4 fashion core to upgrade lv 1 cloth till lv 4.
and i upgrade my cloth from lv 1 to lv 4 success 1 try per upgrade
lv1-lv2 cloth synthesis with fashion core success rate excellent
lv2-lv3 cloth synthesis with fashion core success rate good
lv3-lv4 cloth synthesis with fashion core success rate low (i got lucky success lv 3 to lv 4 with using 1 fashion core 1 try only)
total expense 395(cloth) + fashion core(395)x4 = 1975 balen
I just upgraded my fashion to lvl4 w/o the use of good luck charm. I think its cheaper than buying good luck charm too.
Here what i did, when i put 2x lvl 2 fashion to synth, i didnt buy charm. Then i just press synth. A pop up window appear warning me about lack of charm and suggest paying 298 balens to make it a 100% success rate. Does it the same thing a good luck charm do? But instead of buying charm for 395, i only paid 298 for a 100% success for lvl 2 to 3 and 596 (i think) for lvl 3 to 4 synth, which was supposed to be 790 balens for 2 charms.
Try it, hope i didnt spent more in excitement but that what i did coz the pop up window offer a much cheaper rate to upgrade. Hope some1 can confirm this.