这还有些别人的说的关于钱.

...put up to $5000 of pre-tax $ into my FLEX, and yes, invisalign is covered by FSA (yippee!).你可这样省钱,还有就是一次付了省5-7%
n my wife's office, the fees that she charges for an invisiline case are $1400 higher than for a "traditonal" case with ceramic brackets and $1750 higher than a "tradtional" case with metal brackets.
http://forums.studentdoctor.net/showthread.php?t=332488