It may be possible to have a CSR (after playing CSR roulette) to marry a different card to the receiver but both must have no balance owed on them and be transferred to you from the previous owner. Otherwise it will be $50 for the smart card and I would make sure that there was no balance owed on the receiver first if you went that route.
Basically your better off just buying a used receiver with the smart card because of the cost of the smart card.