Best Heists Trinket choise (Ritual): Alts,transmutation->chaos orbs or regals->exalts?

I have found very expensive looking trinket in Grand Heist yesterday.
However I cannot figure out why it is sold at ~Headhunter price

The question is which one is more profitable:


The chance of dropping Regal looks like very rare one.

Is there any statistics on basic currency drop rate in Heists to calculate the profit?
Orbs of Alteration
Orbs of Transmutation
Regal Orbs

Orbs of Alteration, Orbs of Transmutation, they drops quite frequently, and
12% +4% chance for chaos looks like constant boost in chaos currency drop.

from the other hand, exalt is much more expensive, but drop rate of Regal is very poor.