Hopefully this will do it
This should allow anything > 8500 to 999,999,999.99. If you need a larger number than that it will have to be modified. it should also allow "$", "," and "." as optional, however if there is a decimal it must have 2 digits after.
Code:
(^[\$]?[\d]{1,3}[,]?[\d]{3}[,]?\d{3}(\.\d{2})?$)|(^[\$]?[1-9]{1}[0-9]{1,2}[,]?\d{3}(\.\d{2})?$)|(^[\$]?[8]{1}[,]?[5-9]{1}[0-9]{2}(\.\d{2})?$)|(^[\$]?[9]{1}[,]?\d{3}(\.\d{2})?$)This should allow anything > 8500 to 999,999,999.99. If you need a larger number than that it will have to be modified. it should also allow "$", "," and "." as optional, however if there is a decimal it must have 2 digits after.