In the old days of telecom, it was a lot cheaper to call europe from the US than the other way round. This was because the Euro telephone cos. were govt. owned monopolies and they liked to stick to people calling the US to pay for inflated euro govt.
Then someone thought up the idea of ring back, where to save money on a europe to US call, you would call a US designated number, ring it once, hang up and a call would then "ring back" from the US to your phone in Europe with a US dial tone, you could then place your call "from Europe" while paying US rates.
This is sort of what happens in drug reimportation.
The European govt. telephone monopolies eventually went away and I hope the same will happen with the drug companies.