Suppose Alice is playing Dominion versus Bob. Alice plays a Possession. During the Possession round, which is one of Bob's turns, Bob plays two Action cards, and then buys a Border Village. Possession kicks in, and Alice gains the Border Village instead, allowing Alice to gain a card costing less than $6 (Assume no Highway, Bridge, Princess, or Quarry was played). Alice wants to gain a Peddler. For Bob, it's clear that Peddler only costs $4. But Peddler says that the cost drops during *your* buy phase. So can Alice gain a Peddler off of a Border Village gain during Bob's buy phase?
My hunch is that Alice cannot, but I'm not entirely sure. Moreover, Goko currently displays Peddler as being at a reduced cost to me during my opponents' buy phases, which I suspect is wrong.
Is Peddler the only card whose cost can be different for different players?