I don't like that answer, though. Lying to the king about what happened to his treasure, and taking a skim off the coins and especially any gems that could easily have fallen out of the chest when it fell off the horse is hard to prove otherwise. Just telling me that it is filled with coins is useful information -- coins are very easy to miscount and even easier to lose and are made in such quantity that unless they're collectable, it's very very hard to trace them. I'm not looking to walk off with a mountain of wealth, I'm looking to line my pocket. And it's not about acquiring gp to buy that neat +3 sword of awesome, it's about roleplaying a casual, amoral thief who sees no harm in separating a rich king from a little bit more of his wealth than he had planned.