The three models
Per unit. You're charged for each unit of product used. Transparent in principle, and the model that lets an experienced injector charge you only for what you actually needed. It's also the model where the quoted rate tells you the least, because nobody can price your face until they've seen how strong the muscle is.
Per area. A flat figure for treating a region, regardless of how much product goes in. Easy to budget and easy to compare against another per-area quote. Occasionally generous if you need a lot, occasionally poor value if you need very little.
Per package. A block of appointments paid for in advance below the going rate, occasionally structured as a membership billed monthly. That saving is usually genuine. So is the lock-in, and you are accepting it before you have any evidence of how your own face responds to this particular injector.
To compare two quotes, convert both into one figure: total spend for one year of maintaining the result you want. Ask each practice how many units they'd expect to use for your areas, and how often they'd expect to see you. Then multiply. That single number ends most of the confusion, and asking for it is a reasonable request that a good front desk answers without flinching.
