Botox Cost - CC's Vs. Units?

Di,
You are correct, people sell Botox by cc, which is a measure of volume, or by unit, which is a measure of total Botox. Additionally, they may sell it by areas, which tells you nothing about the volume or the total Botox. It is best to always know how many units you are receiving. This way, the next time you have a Botox treatment, you will know if you need more or less in specific areas. Most careful injectors keep tract of how many units they inject in each area and mark this in their chart. If they are unable to tell you how many units they are injecting, then they probably do not know what they are doing.
I hope this is helpful.

Botox should be priced by unit, because the unit determines the level of efficacy. Whether I dilute 10 units in 0.1 cc or 1 cc, it still only has 10 units of effectiveness, albeit spread over a different volume.

A "unit" delivers a certain amount of relaxation.  A unit can be delivered in 0.01 cc or 0.025 cc or even 0.05 cc, depending on how Botox is reconstituted. 

Thank you for your question. Botox is not normally sold by the cc.
This is more common for fillers. Some injectors sell Botox by the
syringe, but this becomes a very difficult way to compare with units as
the injector may reconstitute their Botox differently. I train other
injectors on the safe and effective use of Botox (and other
injectables). I find that core aesthetic physicians (e.g. plastic
surgeons and dermatologists) have a deeper understanding of anatomy and
the physiology of facial aging and thus I spend less more time focusing
my teachings on assessment and the underlying anatomy. For non-core
(e.g nurses, family practice physicians, OB/Gyn), this is not something
they get a lot of training in during their medical training. Most of
Botox complications that reported is usually due to technique and
inadequate assessment. I would strongly recommend that you stick with a
board certified plastic surgeon or dermatologist who does a high volume
of injectables as part of their practice. You may pay more, but
knowledge and experience is vitally important to having a safe and
effective result.

It is more common to advertise Botox per unit, rather than by cc's. It can be measured by cc's, but the amount depends on how much solution is added to reconstitute the Botox.In Toronto, Botox ranges from $12-$15/unit.

Units are basically the exact amount of Botox administered, before it is reconstituted. Botox can be reconstituted at different concentrations, therefore CCs is not as accurate.