Age would be rather arbitrary, at a certain point of physical maturity yes.
They would also look for breasts that are stable and have not changed for some time, as something like 2 years or more.
I just looked at the pictures you posted on another thread where someone rated you as a 1 on a scale of 10.
Another respondent concurred. I too think that your problem is minor and I'm not certain I would rate your condition as a whole 1. It really is minor.
Even if you have the money and cost is not an issue, I would think you could find a lot of better uses for the cash.
Sorry, I know that is not what you wanted to hear, but I think you're making mountains out of molehills. We have people here who are hoping they look that good after surgery.