I sent the 4th level PCs to a tower, and allowed them to claim the tower as theirs. But I made the previous owner late on his tax payments, by 4700 gold. As the PCs are still relatively low that is an expensive price. So I said they could make 10 payments of 611 gold each week. They said it's an outrageous amount for 4th level characters, and the taxes should not work that way (carrying over to them from the previous owner). Do you think it is an outrageous price, if so how much should I change it? Or is it just whiny players?
