" Smugglers are always going to be flush with cash as soon as they find a buyer for the eight cartons of fountain pen cartridges that write in illegal shades of green, but they never have money today. You should, if you are going to run a smugglers' hotel, get a big account book and assume that whatever you write in it, the reality is, you're going to get paid in fountain pen cartridges. If you're lucky. You could just as easily get paid with something even more useless. "

― Kate Milford , Greenglass House (Greenglass House, #1)