Erm.
Totally legal and allowed - in fact they have some of the best breeders in europe.
Oh and southb? you are completely off-base - exactly the same rules apply in America. Cites is not country specific.
The 430 euros is the limit of duty free goods you can bring in. If the snake (in combination with other goods brought in possibly? ) was worth more than 430 euros then you will need to pay duty (tax )on it. Incidently once it is in the european union no further paperwork is required to move from country to country within it.
You need an export permit in the country of origin and an import permit for the destination.
dr del