How Much Would It Cost to Correct Orbital Asymmetry AS WELL AS "Hollow Eye Syndrome,"and Dark Circles? It's 2-3 Procedures, Yes?

Please post a photo.  Nonsurgical and surgical techniques may be available to either improve the problem or camouflage the area.  Consider consult with an oculoplastic surgeon.

A little bit of asymmetry can be camouflaged with fillers, facial implants, and/or surgery. It’s a three-dimensional problem so it has to be addressed in that way. Often if one eye is lower, you can lift some of the cheek tissue (either with surgery or filler) to make the eyes appear more balanced. Botox and filler can also be used to adjust the brow or a brow lift (either surgical or with Ultherapy) can be used.

If I was in your position, I would be very interested in visiting with several experienced Cosmetic Surgeons who can see, feel and discuss what should and what should not be attempted.  It makes sense to make a number of appointments with Board Certified Facial Plastic Surgeons regarding your concerns.

BOTOX and dermal fillers can often be used to correct small or minor irregularities or asymmetries of the eyes and eye brows.  You have not provided pictures so it is difficult to tell what your problem is or if you would be a candidate for a non surgical approach.  I would recommend having a consultation with a Board Certified Plastic Surgeon.