Fails and gold for armor/weapon

Ive failed a total of 10 times out of 17 total upgrades after I started upgrading my gear above lvl 460, wtf, not only that it takes gold for lvl 11, it also fails, WITH OVER 80% 10 FAILS OUT OF 17, what is this? Am I just unlucky or what.
Anyone got insane failing streaks?

update 21 upgrades, 13 failed

I have atleast 30-40 fails to +13-14