hey guys i am completely new to designer purses in general (minus coach)... i'm looking at starting my collection with a paddington (or possibly an mj). i'm trying to get the best deal on a brand new one and i was reading the forum and it seems as though luisaviaroma is the best place to purchase one? i also read on one of the other threads that ordering from north america, they automatically deduct a tax or something? do you know approximately how much that lowers the cost of a bag (X%)? also, do you know if customs/duties are charged when entering canada? or the u.s? thanks so much!