Are the chances of getting a unique from chance orbs weighed differently for each unique item, or only weighted between the different uniques once the system decides you're getting a unique with that orb?
For example, if I'm chancing an iron ring
Is it 1 in X chance of getting blackwhatever and 1 in X chance of getting le heup of whatever, or is it 1 in X chance of getting a unique, then after that succeeds a 1/4 chance of it being le heup of whatever?
I'm trying to chance a few shaped uniques that are not headhunter and I'm trying to work out whether its even worth the effort to save myself a few ex vs buying the shaped uniques directly.